Keiser M3i Review – Great Quality But Not Smart

As experts in the field, we have tried and meticulously evaluated the Keiser M3i to provide you with a comprehensive review. Let’s delve into the standout features of this remarkable Keiser indoor bike and later I will show you a few smarter alternative indoor bikes you might want to consider.

In terms of performance, the Keiser M3i excels in various categories. With a Q-Factor of 197 mm (equivalent to 7.75 inches), it offers optimal pedal spacing for a comfortable riding experience unless you are an elite road cyclist and used to narrower q-factors.

It has Poly-V Belt drive mechanism which is all one single piece that ensures smooth and efficient power transfer. Moreover, its impressive warranty of 5 years on the frame and 3 years on mechanical parts demonstrates the Keiser’s commitment to durability.

One of the key distinguishing factors of the Keiser M3i that makes it appealing to some but dealbreaker to ther is its manually adjustable magnetic resistance system with 24 levels. The lever/shaft handle makes resistance adjustments seamless especially compared to traditional knobs that need continues twisting. It’s an outdated system compared to motorised system because it doesn’t auto-resistance. But it also has its advantages that I will go over later.

On another note, the Keiser M3i bike features a smart backlit console that goes dim when there is light in the room so it saves battery. It also displays essential metrics such as time, gear level, distance, speed, odometer, RPM, watts, heart rate, and calories burned.

The Keiser M3i goes above and beyond its competitors with several notable advantages. Notably, it stands out for its exceptional quality, proudly made in the USA. Additionally, its whisper-quiet operation sets it apart from other magnetic indoor bikes, so you get to have a peaceful workout environment.

When considering the benefits and drawbacks, our first hand experience revealed that the Keiser M3i’s superior build quality and quiet operation are clear advantages. On the downside, it is important to note that the Keiser M3i is one of the higher-priced options in the Keiser indoor cycle exercise bike lineup.

I know its high price is worth it because Keiser M3i delivers outstanding performance. Its magnetic resistance, adjustable features (including horizontal and vertical adjustments), and exceptional quality contribute to an unparalleled riding experience.

Furthermore, the Keiser M3i’s Bluetooth connectivity, compatible with various cycling apps like Zwift and Peloton, allows for a seamless integration of technology.

The Keiser M3i’s design have a significant impact on user’s comfort. Its V-shape frame adjust to fit literally everyone from below average short to the tallest cyclists. The sport saddle with foam padding ensures comfortable long rides, although wearing cycling shorts is recommended to prevent chafing.

I wholeheartedly recommend the Keiser M3i as the best overall magnetic resistance spin bike for both home use and commercial facilities. Its unrivaled quality, made-in-the-USA craftsmanship, three well maintained personal app, group cycling app, and instructor app, and exceptional after-sales support make it a top choice. With an ample range of resistance levels and versatile riding positions, the Keiser M3i guarantees a challenge for riders of all levels.

What I liked about Keiser M3i:
  • Made in the United Stated with Commercial quality.
  • Great US-based customer support and warranty.
  • Fully customisable to fit everyone in your household.
  • High-quality dual-sided pedals for SPD and regular shoes.
  • Keiser M3i functions perfectly without app subscription.
  • Little to no maintenance is required.
  • Has the quietest drive system seen on indoor bikes.
  • Excellent design by top cyclists in the industry.
  • It’s compatible with all the major indoor cycling apps.
What I dislike about Keiser M3i:
  • The bike monitor is small and doesn’t have built in programs or cycling games.
  • Riding data can’t be saved on the bike’s display.
  • Resistance is not electronic to automatically adjust on Zwift or Peloton apps.
  • User watt/power output is estimated, it’s not direct and very accurate.
  • Handlebar gear shifters would have been better than its resistance lever system.
  • No elbow pads on the handlebars for aero cycling position.
  • Expensive considering alternatives like Echelon EX5 with smart resistance.

How Keiser M3i Evolved From Previous Models

Keiser M3 Series Indoor Bikes Comparison
Keiser M3 Indoor CycleNoOnly Vertically AdjustableNo8-LB + Belt Drive24-Level Manual Magnetic ResistanceNot CompatibleNo media tray
Keiser M3+ Indoor CycleYesVertically & Horizontally AdjustableNo8-LB + Belt Drive24-Level Manual Magnetic ResistanceNot CompatibleNo media tray
Keiser M3i Indoor CycleNoVertically & Horizontally AdjustableYes8-LB + Belt Drive24-Level Manual Magnetic ResistanceCompatibleIncluded media tray
Keiser M3ix Indoor CycleYesOnly Vertically Adjustable (Pivoting)Yes8-LB + Belt Drive24-Level Manual Magnetic ResistanceCompatibleNo media tray

Having personally experienced and tested the various models of Keiser indoor cycling bikes, including the Keiser M3, M3+, M3i, and even the short-lived M3ix, I can share insights into their evolution and improvements over time. I hope these firsthand experiences can help you make an informed decision when considering which Keiser indoor bike to purchase.

The Keiser M3, being the first model in the series, has a few drawbacks. The handlebars were only vertically adjustable, which meant that shorter riders struggled to find a comfortable riding position. Additionally, it doesn’t have Bluetooth connectivity, preventing users from connecting the bike to popular cycling apps like Zwift. Furthermore, it doesn’t include a media tray to keep your tablet and phone on the bike. But at $1699 it was always the cheapest of all Keiser M Series indoor bikes so it was still a famous affordable commercial quality spin bike.

However, in response to customer feedback and the need for improvement to compete in the market, Keiser introduced the M3+. This model addressed one of the major drawbacks of its predecessor by adding a horizontal handlebar adjustment feature. This upgrade allowed for a more personalized fit, accommodating riders of different sizes. But despite this improvement, the M3+ still lacked Bluetooth connectivity, which was a significant downside for individuals seeking interactive online cycling experiences. As a result, Keiser decided to discontinue the M3+ and introduce the Keiser M3i.

The Keiser M3i, in my opinion, is the most significant leap in the evolution of Keiser indoor cycling bikes. It not only addressed the limitations of its predecessors but also brought new and exciting features to the table.

The redesigned handlebars offers multiple ergonomic handgrip positions and allowed for horizontal adjustment, ensuring a comfortable and customized riding experience. I particularly appreciated the addition of a spacious media tray, providing a convenient spot to place my tablet or phone during workouts.

Most importantly, the M3i console is equipped with smart backlit technology and Bluetooth connectivity, enabling seamless integration with popular cycling apps. This connectivity feature opens up a whole new world of interactive training possibilities and allows to track your progress effortlessly.

Keiser also introduced another indoor cycling bike called the M3ix. However, it didn’t gain much traction. The pivoting handlebars, which were the primary selling point of the M3ix, turned out to be rather unnatural in practice because the whole was fixed but only the handlebars were leaning. This design flaw greatly limited its popularity among users.

Alternative Indoor Bikes to Consider

I understand the Keiser M3i may not be the perfect fit for everyone, especially if you prefer spin bikes with built-in HD screens or those smart spin bikes that can automatically adjust resistance while riding on platforms like Zwift and Peloton. Additionally, the Keiser M3i is priced at $1999, which may not be affordable for everyone looking for an indoor bike.

To cater to different needs and preferences, I’ve explored and found three Keiser M3i alternative indoor bikes that I believe might suit you better. Each of these options has its own unique set of features that make them ideal for specific types of users.

The Tacx Neo Bike is an excellent alternative for elite cyclists who are looking for a more advanced experience. Designed with front and rear gearing systems like a road bike, automatic magnetic resistance to replicate uphill and downhill cycling, gear shifters similar to those found on road bikes, and an extremely accurate right and left leg power meter, the Tacx Neo offers a more comprehensive setup. It also provides options for a narrower q-factor and multiple crank arm choices. This bike is particularly appealing to professional and semi-professional road cyclists who prefer not to use their road bikes on trainers at home.

For those seeking an adjustable tilting system, the NordicTrack S22i is a top contender. Unlike the Keiser M3i, which remains fixed on its frame, the NordicTrack S22i incorporates an electronic motor that tilts the bike forward to simulate downhill riding and backward to mimic uphill climbs. This feature adds a touch of realism to your indoor cycling experience. Additionally, the NordicTrack S22i boasts a generous 22″ touchscreen display that integrates seamlessly with the iFit application, giving you a 20″ larger screen compared to Keiser’s console.

Budget-conscious shoppers who desire automatic resistance should consider the Echelon EX5 as a worthy alternative to the Keiser M3i. With 33 levels of electronically and manually adjustable magnetic resistance, this bike allows for a wide range of intensity options. It can also change resistance automatically when used with platforms like Zwift and Peloton. The Echelon EX5 is priced at $999, which is significantly more affordable than the Keiser M3i, making it a more budget-friendly option without compromising on quality.

By exploring these alternatives, you can find an indoor bike that better suits your specific preferences and requirements. Whether you’re an elite cyclist, seeking an adjustable tilting system, or looking for a more budget-friendly option with automatic resistance, there are alternatives to the Keiser M3i that may better meet your needs.

Keiser M3i Bike$19993x4" with backlit and functions fully without paid subscriptionMonitor runs on 2 AA batteriesEstimation watt, rpm, speed, distance, heart rate, calories, gear, & time.Manually adjustable magneticKeiser, Zwift, Peloton, Kinomap, QZ, Strava, Rouvy, and more9/16" Thread, Dual-Sided (Cage and SPD) Pedals Floor mat, tablet tray, and foot stretch pads
Tacx Neo Bike$29993x5" with backlit and functions fully without paid subscriptionMonitor runs on wall socket powerDirect watt with left & right leg balance, rpm, speed, distance, heart rate, calories, gear, & time.Electronically adjustable magneticZwift, Garmin, Peloton, Kinomap, QZ, Strava, Rouvy, and more9/16 Thread but Sold separatelyGear shifters, drop handlebars, automatic resistance, USB charging ports, and cooling fans
Nordictrack S22i$149922" Functions partially without paid subscriptionMonitor runs on wall socket powerEstimation watt, rpm, speed, distance, heart rate, calories, gear, & time.Electronically adjustable magneticOnly Works with iFit Application ($15-$39 Per Month)9/16" Thread Basic Caged PedalsAutomatic resistance, charging and HDMI ports, dumbbells, and cooling fans
Echelon EX5 Bike$999There is no built-in console on the bikeResistance runs on wall socket powerEstimation watt, rpm, speed, distance, heart rate, calories, gear, & time.Electronically adjustable magneticEchelon, Zwift, Peloton, Kinomap, QZ, Strava, and more9/16" Thread, Dual-Sided (Cage and SPD) Pedals Automatic resistance, tablet tray, and a USB charging port
-12% Echelon EX5
$876.73 $999.99
NordicTrack S22i
Keiser M3i
Tacx Neo
Last update was on: May 18, 2024 6:50 pm

Keiser M3i Quantitative Measurements

Transmission MechanismPoly-V Belt
Warranty5 Yrs Frame, 3 Yrs Parts
Q-Factor197 mm equals
PedalsToe Cages + SPDs
Resistance TypeManually Adjustable Magnetic
Resistance Levels24-Levels
Resistance AdjusterLever/shaft
Current Resistance levelProvided on the Console
Water Bottle HolderIncluded
Dumbbells and HolderSold Separately
Tablet HolderIncluded
Fixed GearYes
Base Levellers4 points
Feet StretchersIncluded
Heart Rate MonitorPolar-Brand Bluetooth Compatible
Bike DimensionsH 45” X W 26” X L 49”
Bike Weight85 lbs
User Weight Capacity300 lbs
User Height CapacityMin 4.10″ | Max 6.7″
Flywheel Weight8 lbs
Assembly ToolsAll Tools Included
Floor Protection MatIncluded
Seat AdjustmentVertical & Horizontal
Handlebar AdjustmentVertical & Horizontal
Power Source2-AA Batteries (Included)
ConnectivityBluetooth (4.0 Standard)
Watt FeedbackEstimation (Not Direct)
Console Screen3″x4″ Smart Backlit
Console FeedbackTime, Gear level, Distance, Speed, Odometer, RPM, Watts, Heart Rate, and Calories
Compatible ApplicationsZwift, Peloton, Keiser, Kinomap, QZ, Bkool, Strava, CycleCast, Sufferfest, Trainer Raod, Rouvy, & More
Keiser M3i Quantitative Measurements

Keiser M3i drive system

Keiser M3i features belt drive which gives this spin bike a very smooth ride. Belt drive also makes the bike very quiet and free from everyday maintenance. Unlike a chain drive that breaks more often, needs adjustment and lubrication.

The Keiser stationary bike features a single belt drive which requires zero adjustments. The belt transfers the power from a big pulley to the little pullies and finally turns the flywheel. This drive mechanism creates a high gear-ratio which is one of the reasons you won’t get the up and down pedal motion and you get the real road feel cycling despite the light-weighted flywheel.

The polly-V belt that comes with the Keiser M3i indoor bike has a pro and a con. In terms of power-transfer it is not as efficient as “Toothed/Carbon Belt” (because the polly-v belt is flat and not as grippy) but in terms of noise and smoothness, it is much quieter and smoother than “Toothed/Carbon Belt”. So, you need to deicide which one is more important to you (100% power efficiency or super smooth and quiet indoor cycling). If you are an elite rider and deicide to go for power efficiency, I would say consider buying the Life Fitness IC7, Schwinn AC Power, Stages SC3, or Spinner Chrono Power. They all come with Toothed/Carbon belt drive system. You can find the full review for each of these bikes on the site.

Keiser M3i indoor exercise bike console


In this Keiser M3i review you will learn everything there is to learn about this bike. Just like other Keiser M series spin bikes, you get a digital display with a light sensor at the top of the console that turns on the back-lit when the room is dark.

If the room light is good enough to read the number without the back-lit,
then it stays off. It’s a good feature for longer battery life.

The LCD display is not touch-screen and doesn’t have any buttons. As soon as the crank arms turn, you will be able to see the values of your workout.

There are four new features on the Keiser M3i console including interval training set up, Keiser M3i Bluetooth setup for data storage, Bike ID# set up, and Mile and kilometer set up.

The workout values that you can see on the Keiser M3i spin bike console are;

  • Revolutions Per Minute (RPM)
    Meaning how fast you pedal per minute. You can read the manual to see the max RPM you can do because there is a limit for your own safety.
  • Watts
    This tells you how much power you are generating, it’s an important feature, especially if you follow certain spin classes. Every few seconds the display alternates between watts and calories burned. Every time for 2 seconds you see the calories and for 6 seconds you see the watts.
  • Heart Rate
    The handlebars don’t have pulse sensors. In order to see the heart rate, you need to wear a polar strap which is not included with the bike. If you see an O, it means you are either not wearing a strap or your strap is not compatible.
  • Elapsed Time
    You will see the total time of your exercise.
  • Gear
    The current resistance level you are spinning is shown here. Keiser M3 and M3+ have 24 levels of resistance
  • Odometer
    When you start pedaling for a few seconds, it shows the distance of your workout since you bought the bike. After few more seconds, it starts showing the distance result of your current exercise.
  • How to reset the computer
  • Two ways to reset the computer. You can move up and down the gear shifter twice or leave the Keiser M3 Plus indoor cycle for 60 seconds.
  • 60 Seconds
    If you stop pedaling for 60 seconds, the workout data will be automatically reset to zero. It’s one of the drawbacks of Keiser M3 Plus indoor cycle, especially if you need to answer a call or open the door for a minute.
  • Average workout calculation
    To view averages of RPM, watts, and heart rate at any point in the workout, stop pedaling for three seconds. This will flash your averages until you start moving again or until the computer goes to sleep after 60 seconds.
  • Resetting ride averages, elapsed time and distance
    To reset your averages during the workout, stop pedaling for three seconds and the averages will start to flash, while they are flashing move the gear shifter from bottom to top two times quickly. This will reset your workout information back to zero.
  • Keiser M3i LCD battery and how to replace it
    To test the computer batteries and see if they are charged, pedal until the computer “wakes up”. If the battery is low, a “LO-BA” will display at the bottom of the screen. To replace the batteries unscrew the back of the computer housing, remove the old AA batteries and replace with a set of two new AA batteries.
  • Interval training
    To initiate an interval, starting from a high gear drop the shifter handle to gear 1 for 1/4 of a second and lift it up to a higher gear immediately. “inL #” will display confirming the interval has started.
    Repeat the above steps to end the interval. When the interval ends the computer will display “inL End” and the averages for that interval will blink.

Note: The distance traveled is displayed in Odometer in the default settings. It’s somewhere between kilometer and mile but if you want to set it to miles or kilometers, watch the video below or read the M3i manuals. At the time of purchasing you can also ask the retailer to set up the M3i trip distance to miles.

Keiser M Series Application

Keiser M Series Application Features

What does the Keiser Application offer? The Keiser M Series app is a FREE powerful tool for collecting data from Keiser M Series equipment. It offers the real-time graphs for power and heart rate, cadence range dials, FTP zones, and W/Kg ratios. Choose to free ride, perform an FTP test, or follow one of the guided sessions designed by Keiser Master Trainers.

It also allows you to sign in with your Keiser Metrics account to sync indoor ride sessions with the Keiser Metrics cloud to perform advanced analysis and review of workout sessions. You can also connect the Keiser Metrics to other cloud platforms like Apple Health, Strava, and TrainingPeaks for automatic session syncing! Unfortunately Keiser M Series app doesn’t offer live and on-demand classes.

Additional Keiser M3i Compatible Applications:

How to Connect Keiser M3i Bike to Zwift Application
How to Connect Keiser M3i Bike to Peloton Application

The old Keiser M3i indoor bike that was manufacture period to October 2021 came with a console that only compatible with a few indoor cycling applications including Bkool, GOInd, Impowered BeTested, and Keiser M3 Series Pro apps. However, it wasn’t compatible with several other very famous indoor bike applications including Zwift and Peloton.

Seeing how everyone was interested to connect their Keiser M3i indoor bike to Zwift, Keiser decided to build a tiny converter that you had to attack the back of your console to make the bike properly connect to many indoor cycling apps that weren’t initially compatible with the bike.

Thankfully since 2021 major improvements were brought to Keiser m3i. The company has discontinued the additional converter (that you had to buy separately) and has replaced it with the M Connect/Series Computer.

The “M Series Computer” has been upgraded with the technology of M Series Converter, meaning you can connect to any of your favorite fitness apps with no additional setup or external devices.

Basically, today in 2023, when you buy a Keiser M3i indoor bike, right out of the box it will connect and transfer all the ride data with almost all cycling applications including Zwift, Strava, Peloton, and one of my favourite apps the QZ.

However, if you found an old or second hand Keiser M3i that was built before the mentioned date, you will still need to purchase the Keiser M Series Converter (or change/upgrade your bike’s console) to synch your indoor cycling data to major apps such as Zwift, Peloton, and Strava.

One important note for those of you purchasing a second hand indoor Keiser M3i indoor cycles is to make sure to ask the retailer/seller if the bike has the upgraded “M Connect Computer”.

If you end up with a Keiser M3i bike that still has an hold computer, you would need one of the following solutions to fully synch your bike with the popular indoor cycling applications such as Zwift and Peloton.

Keiser M3i features Standard Bluetooth 4.0 but not ANT/+. Unfortunately, their Bluetooth can’t communicate with some cycling Apps. Although, it might connect to some of them, it doesn’t synch the cadence to these apps. Here are your options in order to properly connect the Keiser M3i spin bike with the Zwift, Peloton, Train Road and other Apps.

Solution 1: (Recommended)
Keiser M3i Converter

It was released in December 2018 and it is currently available in the US and UK. The converter is a small device that attaches to the backside of the M3i’s media holder and runs on a coins cell battery that lasts 3 months.

Once you double-tap the converter, it will automatically search and connect to the bike. Using this converter by Keiser, you can join the Zwift and many other cycling apps.

The converter will enable the bike to send the RPM and the Watt to the connected fitness apps. The M3i converter comes with a battery, instructions, 2 pieces of hook and loop adhesive tapes.

Currently (February 2021) the Keiser M3i’s converter is included in the M3i bundle. Normally, the converter costs around $190 but you get it for free when buying the Keiser m3i cycle.

Solution 2:
Wahoo sensors

Purchase a speed sensor and stick them to your pedal, download the FREE Wahoo App, move the crank arms to wake up the sensors, then turn on your device’s Bluetooth and there you will see the option to connect with the Wahoo sensors.

After connecting the sensors to your device download the cycling training app that you like and join the games, simple as that. The free Wahoo App is available on Google Play and Apple Store and allows you to track and save your daily progress on your account.

It costs less than $50 and takes less than 5 minutes to stick them to your bike’s crank arms. Wahoo speed sensor features Bluetooth 4.0 and ANT/+ connectivity. They can connect to pretty much all your Bluetooth-enabled Android and iOS devices.

Solution 3:
Power Pedals

There are many ANT+ and Bluetooth-enabled Watt pedals that transfer Power, Cadence/RMP, and Speed to your device. These pedals come with spd clips and install like any other pedal to your Keiser M3i bike. However, this option is very pricey. Some of the most popular high-tech pedals are Assioma DUO Power Meter, Garmin Vector 3 and Powertap P1 Pedals.

Wahoo vs Power Meter Pedals. Wahoo sensors only transfer the Cadence and Speed while the Power meters transfer Watts, Cadence, Speed, Foot balance, MPH and even more workout details. Obviously, Power Meters are the better option but they also cost up to 15 times more than a set of Wahoo sensors.

Keiser M3i Resistance System


Keiser M3i indoor cycle spinning bike has 24 levels of manually adjustable magnetic resistance for all ranges of cycling from easy to medium and intense training, while most spin bikes come with less than 20 resistance levels. Note that the resistance is NOT electronically adjustable so you don’t need a wall socket/plower-plug to use the bike which brings us to the next point that M3i doesn’t change resistance for uphill and downhill automatically when you connect the bike to applications such as Zwift.

Keiser M series features Eddy Current magnetic which means nothing comes in contact with the flywheel. It’s also very quiet and smooth because no parts touch each other. When you add resistance and bring tension on the bike, the two opposing magnets hover on both sides of the flywheel to give resistance. So, the more tension you give to the bike the more surface of the flywheel gets covered by the magnets. There is about two quarter-sized magnets on either side of the flywheel.

Magnetic resistance does not come in contact with the flywheel, therefore, there are no worn-out parts. The other types of resistance are friction and brake pads. They both make noise and need maintenance.

Another good feature of Keiser M3i is the gear shaft and the current gear is displayed on the LCD. Most spin bikes have a knob for resistance adjustment and it’s difficult for the rider to go back to his last tension gear because it’s not written on most bikes.

However, Keiser M bikes come with a properly designed shaft right in front of the rider at the bottom of the handlebars for easy gear switching.

The gear level is displayed at the bottom left corner of the LCD which is also a very unique and useful feature. You can also use the gear shaft for the emergency brake. To do so, you need to move the shaft all the way up and hold it there. This way you bring more tension to stop the flywheel from turning.

Note: You can also set up your bike to do interval training and it’s a new feature on Keiser M3i indoor cycle. Read the above Console Paragraph for instructions.

Keiser M3i flywheel weight

Keiser M3i spin bike features an 8-lb steel flywheel. It’s proven that for spin bikes with magnetic resistance, single belt drive and the combination of big and small pullies, the flywheel weight is not a factor of smooth pedal motion.

All the Keiser M Series bikes (and Life Fitness ICG bikes) have 8-Lb flywheels and still, they manage to give you the most natural road feeling in indoor cycling that you can get. The reason behind this is the belt, magnetic resistance, and both the big and small pulleys.

It’s not freewheeling, which means when the flywheel turns, the crank arms and the pedals turn too. If you pedal forward, the flywheel turns forward as well. If you pedal backward, the flywheel turns backward. This great indoor cycle gives you a 360-degree pedal stroke which makes the motion more fluid rather than up and down.

There are three major pros in Keiser M3i’s lightweight flywheel; It keep the bike lightweight so you can easily move the bike from one place to another. There is less weight/pressure on the bearings so there is less maintenance. Lastly, it’s easily to get start cycling and get the flywheel moving, unlike heavy flywheels that require more knee strength to use the bike. Therefore, senior members of your family and even those with minor injuries might be able to ride the Keiser M3i indoor cycle while they may not be able to use a spin bike with 50-pound flywheel.

M3i’s frame and maintenance frequency

Keiser indoor bikes are top-rated and designed for commercial use, meaning they are built to be used multiple users in the spin classes and clubs for hours daily. So, there is no doubt that Keiser M3i indoor exercise cycle has one of the best heavy-duty steel frames among the spin bikes in the entire market.

The perfectly designed dimension of this spinning bike helps to keep the bike and the rider steady even during the most energetic and intense exercises. The painted and the aluminum Keiser M3i parts are very durable against the sweat.

The main material used in the frame of Keiser M3i indoor bike is heavy-duty aluminum and steel. The new sexy dark black and shiny red colors, simplicity and strength design on Keiser M3i can attract even those who don’t do the spinning workout. The V-shape frame helps to get on and off the bike easy. It also helps to protect the bike from sweat. Keiser M3i frame requires little to no maintenance.

The base has four feet, providing maximum stability on uneven surfaces. For better protection of the floor, you can purchase a Keiser M3i mat to use under the bike as well (unless it’s included in your purchase).

Note: Three feet of the frame are fixed and can’t be adjusted but one foot is adjustable. The leveler’s foot is located on the left rear corner of the base frame. By rotating the foot inward or clockwise you can adjust the base on uneven surfaces.

Read the list of the parts you need to check daily, weekly and monthly:

  • Wipe off the sweat after each session
  • Check and re-torque crank arms and pedals, weekly for the 1st month
  • Clean with warm water and a soft towel, weekly
  • Check computer for low battery life, weekly (pedal until the computer “wakes up”. If the battery is low, a “LO-BA” will be displayed)
  • Check and re-torque crank arms, pedals and mainframe nut, monthly
  • Wax those areas most in contact with sweat, monthly
  • Lubricate adjustment handle threads, monthly

Keiser M3i handlebars, seat, and setup


Keiser M3i handlebars are designed differently and unique from any other spin bike on the market. The shape is ergonomically designed for less stress on the back and a better view of the tablet and phone screen if you have them on the tray.

It’s 4-way adjustable to accommodate users with different heights. Despite the media tray, you can still use the handlebars in 4 cycling positions: Overhand front position, Hook or middle position, Extended position, and Time trailing positions.

Note: If you are planning to buy a spin bike that has V-shape frame, make sure that the handlebars are horizontally and vertically adjustable. Because they move up and down at a 45-degree angle.

On the V-shape frames, if you bring handlebars down, it gets too close to you because it doesn’t go straight down. The same rule applies when you move the handlebar up (it gets far from you) because it doesn’t go up straight. If it’s horizontally adjustable, you can simply adjust it to come closer or it gets far from you.

The seat is easy to replace and very comfortable for a spin bike. You can adjust the seat for your height by loosening the levelers located at the back of the seat. It’s also 4-way adjustable, which means you can fore/aft, up and down to help you find the most comfortable and natural position.

Keiser M3i also features plunging system seat post. The seat post has multiple holes where you can lock the plunger. You can also have the seat halfway between two holes and just tighten the knob. The good thing is that if the seat adjustment knob is not tight enough and the seat falls down, it will fall down into a hole instead of going all the way down.

M3i’s pedals and cranks

One of the standout features of the Keiser M3i pedals is their revolutionary design. Keiser has engineered them to be superior in terms of comfort and functionality compared to other indoor cycling bike pedals on the market.

Whether you prefer wearing normal athletic shoes or clip-in specific cycling shoes, these pedals are perfect for you.They are equipped with SPD elements on one side and a shoe cages on the other side, allowing you to exercise with whichever shoe type suits your preference. The 9/16 standard pedal thread is also another factor that makes it easy to find pedals replacement for the Keiser M3i if they ever break.

The first thing that caught my attention is the ramped barbs on the pedals. They provide a secure foot placement without any difficulty when inserting your feet. It’s a small but significant detail that contributes to the overall stability and confidence you feel while riding.

The curvature of the pedals is another remarkable feature. It perfectly matches the typical design of athletic shoes, eliminating any pressure points on my feet. This ensures that you can enjoy a comfortable and pain-free spinning ride, even during long and intense workouts. Keiser’s attention to detail in this aspect truly sets them apart.

Durability and performance are also priorities for Keiser, as evident in the pedal bearings. These bearings have been rigorously tested for both static and dynamic loads, ensuring their strength and reliability when you are getting on, off, and riding the bike. The smooth and consistent pedaling motion I always experience is a testament to their quality.

Adjusting the tension of the SPD clips is a breeze with the Keiser M3i pedals. The tension adjustment feature is easily accessible, allowing you to customize it to your preference. This ensures a secure and efficient connection between your indoor cycling shoes and the pedals, enhancing your overall riding experience.

Keiser’s focus on the axle design is also commendable. The flexible and strong construction evenly distributes the stress load, ensuring optimal performance and longevity. The Chromoly steel axle, forged, machined, and heat-treated, adds to the pedals’ durability and reliability, even during intense workouts.

Another thoughtful design choice is the re-angled position of the SPD clip. This provides greater clearance between the cage and the ground, minimizing the risk of scraping or hitting the ground while using the SPD clips. It’s another Keiser M3i’s feature that prioritizes both functionality and rider safety.

Moreover, the angle of the crank provides a comfortable riding experience, particularly for individuals with wider hips. The thoughtful design accommodates a broader range of riders, ensuring that everyone can find a comfortable and ergonomic riding position.

I think these re-designed pedals offer unmatched comfort, secure foot placement, and easy customization options. The curved crank design accommodates different shoe types and body shapes, making the Keiser M3i a versatile and comfortable choice for pretty much any rider.

Keiser M3i Warranty Terms


When it comes to the warranty terms of the Keiser M3i, I’m thrilled to share my first-hand experience. Keiser truly stands behind their product, offering generous coverage to protect your investment and provide you with peace of mind.

Let’s start with the frame, which is the backbone of the bike. I’m amazed by the 10-year warranty they provide for the frame. It speaks volumes about the confidence Keiser has in the durability and long-lasting performance of their M3i model.

Moving on to the crucial components like cylinders, displays, and processor boxes, I’m happy to report that Keiser offers a solid 3-year warranty. This ensures that you can rely on accurate data and seamless functionality throughout your cycling sessions.

When it comes to the compressor and dryer, cables, pulleys, and bearings, Keiser doesn’t disappoint either. They provide a reliable 2-year warranty for these essential parts. It’s comforting to know that Keiser has your back when it comes to the smooth operation and overall performance of the resistance system.

Even the chrome components, which add a touch of elegance to the bike, are covered for 1 year. This demonstrates Keiser’s commitment to maintaining the aesthetic appeal and structural integrity of their indoor cycle.

While some parts have a 90-day warranty, such as paint, upholstery, seat belts, hand grips, and other rubber and plastic products, it’s important to note that Keiser is dedicated to addressing any potential defects or issues that may arise during the initial period of use.

However, it’s essential to understand that Keiser will not cover certain situations under warranty. These include accidents, abuse, improper use, neglect, improper maintenance, and assembly not following the provided instructions. So, it’s crucial to handle and maintain your Keiser M3i with care and follow the guidelines to ensure your warranty remains intact.

New Keiser M3i included accessories

I know in the past the Keiser M3i didn’t include much in terms of accessories but now there are amazing accessories that come with the Keiser M3i from my own personal experience. These additions truly elevate the overall cycling experience and make it even more enjoyable. Let me take you through each of them.

First and foremost, the water bottle and its holder is a game-changer. It’s designed to fit both small and larger bottles, ensuring that you stay hydrated throughout your intense workouts. I personally love having easy access to my water without having to pause or reach too far.

Also, what sets the Keiser M3i apart from its predecessors, the M3 and M3+, is the inclusion of a well-angled and perfectly sized media rack. This is also a game-changer because you can now keep your phone and tablet right in front of you, allowing you to stay connected and view your workout performance data on a larger screen. It’s incredibly convenient and adds an extra level of enjoyment to your rides.

When it comes to powering the LCD display, the Keiser M3i requires only 2 AA batteries which comes with the bike. What impressed me the most is the back-lit sensor, which significantly extends the battery life compared to other indoor bikes I’ve used. It’s such a relief not to worry about constantly replacing batteries and being able to focus solely on your workouts.

Keiser understands the importance of monitoring heart rate during exercise, which is why they include a wireless Polar strap with the M3i. This strap provides accurate heart rate data, allowing you to track your performance and make adjustments as needed. It’s a small accessory that makes a big difference in optimizing your indoor cycling workouts. But if they don’t include this with your Keiser M3i, you can buy a Garmin 010-12883-00 which works good with the bike.

The inclusion of assembly and maintenance tools is a thoughtful touch. I appreciate having all the necessary tools in that nice Keiser bag at my fingertips to set up the bike and perform routine maintenance tasks. It saves me time and hassle, allowing me to get right into my workouts.

Additionally, the holiday bundle of the Keiser M3i includes a floor protection mat. This is a fantastic addition because it not only keeps your floors safe from potential damage caused by the bike, but it also adds stability and reduces vibrations during your cycling rides. It’s a small investment that goes a long way in creating a comfortable and stable workout environment.

Last but not least, the two dumbbells and holder that come with the M3i are a great bonus. They allow you to incorporate upper body exercises into your cycling routine, providing a well-rounded full body workout experience. It’s convenient to have them right there with you, eliminating the need to switch between equipment.

All in all, the accessories that come with the Keiser M3i truly enhance the overall cycling experience. From the water bottle holder to the media rack, from the wireless Polar strap to the assembly and maintenance tools, and from the floor protection mat to the dumbbells and holder, Keiser has thoughtfully included everything you need to have a convenient, comfortable, and engaging workout session.

Keiser M3i Assembly Process

It’s important to follow the Keiser M3i’s instructions carefully to ensure proper assembly and avoid any future warranty issues. The Keiser M3i comes partially assembled, and you’ll need to put together the frame, flywheel, pedals, handlebar, and console. The whole process should take approximately 1 hour if done correctly.

To start, carefully unwrap the Keiser M3i, using a knife or scissors, making sure not to scratch the bike’s surface. It’s worth noting that assembly is a bit more involved compared to other spin bikes I’ve tried and reviewed, especially when it comes to the flywheel. Having an extra pair of hands or a helper can make the process smoother.

Begin by mounting the cycle on the base, ensuring that the front of the bike faces the wheels on the base. Then, tighten the four frame nuts that secure the cycling unit to the base. Don’t forget to use the washers that come with each nut for added stability.

Next, you’ll need to install the flywheel and hubcap. Lower the resistance shifter to release the magnets, allowing you to slide the flywheel in between them. Align the holes of the flywheel with those on the hub, and then install the hubcap. You’ll need a 5mm Allen wrench for this step. Ensure that all the bolts holding the flywheel and hubcap are tightened securely. If the flywheel turns smoothly without hitting anything or wobbling, you can proceed to install the flywheel guard, a round piece of red metal that adds protection.

Moving on to the pedals, it’s crucial to install them on the correct sides. The right pedal (R) should be installed on the right/R crank arm, and the left pedal (L) on the left/L crank arm. Remember that the left pedal tightens in a counterclockwise direction. I recommend double-checking that the pedals are tightly secured to prevent them from coming loose or stripping the pedal threads.

Next, install the computer onto its mount and then attach the handlebars. Once the handlebars are in place, you can install the tablet holder, which is a convenient addition for placing your device while you work out. Finally, if necessary, you can install the seat, which typically comes preinstalled but may need adjustment based on your preference.

Keiser M3i FAQs

I own a M3i Keiser Bike. How can I access the Keiser M Series app?

If you have a Keiser M3i, simply download the Keiser M Series application which is available on App Store and Google Play. Then create and log into the Keiser M app on your phone, tablet or web browser. And the app immediately hookes up with your Keiser bike and the heart monitor (if you use one).

On what devices can I access the Keiser M Series App?

The Keiser M App is available on web and for the iPhone, iPad, Android phones, Android tablets, Mac, and Windows. You can use HDMI cable to connect the Keiser bike on the bigger screen.

Can I use my Keiser M3i without a subscription?

Sure, the Keiser M3i bike and Keiser M Series applications doesn’t require any type of paid subscription. Unlike Peloton, Echelon, and Nordictrack bikes, the Keiser M3i studio cycle does not need any subscription to function at its 100% capacity and allow you to record your rides. Using the Keiser M Series app, the M3i Provides FTP, Guided Sessions, and Ride Data, all for free.

Can you use Zwift with Keiser?

Yes you can use and connect the Keiser M3i to Zwift using the Keiser Conversion Kit. If your M3i is comes with Keiser M Computer, you can use it with Zwift, Peloton and many other applications without the Keiser Conversion Kit. But if your Keiser M3i bike comes with an old Keiser Computer, you will need the M-series converter in order to use Zwift.

Is Keiser M3i worth it?

The quality and engineering of the Keiser M3i is worth $2,000 alone. The ergonomic and the new Keiser M Computer technology that allows the user to download and track workout data on all the major cycling application takes it over the top. All in all, if you can afford it, the Keiser M3i is a high quality indoor bike that can take your fitness to the next level and worth every penny.

How do I test FTP on Keiser M3i?

The FTP Zone Dials screen displays either Cadence (RPM) or FTP using colored intensity/power zones. To access the Dials screen from the home screen, simply open the session controls and choose Dials. An FTP test must be completed for the FTP Zone Dials to display. Otherwise, only Cadence will display.

How to Fix Keiser M3i Converter Battery Issue?

If you are using the Keiser Converter, make sure to install the Keiser Converter Kit Updater plugin and update the firmware of the Converter. The recent update has made a huge difference with a much more stable Bluetooth connection and longer battery life. Replacing the battery would also help.

Where are Keiser Indoor Bikes Made?

Keiser Fitness equipment is Made in the United States (California). Since it was built, Keiser has always been at the cutting edge of the industry, and remains there today with a full range of fitness products for gyms, professional cycling studios, and at-home use. As you might have guessed, they also provide excellent US-based support for Keiser M3i and other products.

How much does Zwift cost to use with Keiser M3i?

Zwift charges $14.99/month to use with Keiser M3i or any other equipment you might have. You don’t need to commit immediately because there is a seven day free trial available to all new members.

Can I use the Keiser M3i with Peloton App?

Sure, you can use the Peloton app with the M3i without any issue or additional accessories if your Keiser M3i comes with the new Keiser M Computer. However, if your M3i spinning bike has the old Keiser Computer, you would need the Keiser Converter Kit to synch cadence to Peloton App.

9.5Expert Score
Keiser M3i Indoor Cycle

M3i is a safe, Solid and Evidently maintenance free and also ultra-reliable machine. Hundreds of thousands of Keiser M Series bikes sold worldwide, mostly to professional cyclists and major indoor cycling groups proves that Keiser M3i truly exceeds the expectation of a rider. Although not necessarily in terms of technology, we strongly believe the Keiser M3i is currently one of the best spin bikes in the entire market, in terms of quality. If you are ready to take your indoor cycling to the next level and the budget is not your main concern, Keiser M3i is the best option. You might even get a free mat, sweat towel, dumbbells, and stretching pads with the bike. This elegant looking solid indoor bike has everything you need for indoor cycling. Whisper quiet operation, 24 resistance level to challenge yourself beyond your limits, easy portability, innovative life lasting pedals and crank arms, stainless steel frame, and Bluetooth protocol for online cycling.

Warranty and Customer Support
Built Quality and Inspection
Application Compatibility
User Experience
Resistance Technology


Hi there, I'm Sayed Hamed Hosseiny, the founder and one of the authors at (YEB). I am a former indoor cycling instructor and personal trainer with nearly 20 years of experience. With a passion for indoor cycling, I have spent years designing cycling parts, repairing, and importing exercise bikes. All the articles, tips, guides, reviews, and comparisons on (YEB) reflect my personal opinion and expertise in the field. I'm excited to share my knowledge with fellow exercise bike enthusiasts and help people find reliable indoor cycling information and the best exercise bike for their needs. If you have any questions or suggestion, you can contact me at

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  1. Hi there, I’m trying to find out what apps are compatible with Keiser M3i spin bike but keep receiving different results, could you clarify this feature of Keiser bikes? I would really appreciate it!
    BTW, your Keiser M3i Review is really detailed and helpful. Thanks in advance

  2. Hi,

    Pertaining the Solution 1 option of using the Wahoo speed and cadence sensor to get connected to Zwift, can I find out how I would install the speed sensor ? I know the RPM(cadence) one I can stick to the crank arms but what about the speed sensor ?


  3. I am interested in this bike, but I will wait until Keiser update the bluetooth without the need of the M convertor. Also the Wattrate TFT Computer on Lift fitness IC bike and also the power zone color is way better than the Keiser’s, as once I enter my FTP value the computer will display my zone info base on power.

    • I agree TFT computers are more advanced, it is about time for Keiser to bring improvement on their M Series monitors. Not sure when they will update the Bluetooth as they have been saying it for years. I suggest you search our website for the “Flywheel Home bike”. It has a large HD monitor, WiFi, Bluetooth, magnetic system, Lock pedals, and overall great ergonomics. Thanks to Black Friday deals, you can save $700 on that bike.

      • The gym I go to used to have the Keiser M3 for spin class, and switched to the IC6 this year. Everyone loves the zone training idea so we can work at the right zone in the class instead of guessing the right resistance level in the Keiser bike. Just follow the RPM given by the instructor and adjust the level till reaching the right zone. The IC6 with the myride screen is $2300 CAD in BF and Keiser M3i is $2700 & $300 for the M series convertor. Keiser can keep doing their own thing and their own pace but I am afraid given the rapid changing of the industry it will be left behind pretty quickly. I can’t even pair my Garmin Fenix to the Keiser M3i is unforgiveable.

  4. I have an M3i and it is compatible with Zwift and l those apps listed as incompatible when you get the M Series converter.
    However it is now completely compatible with Peloton without the converter but it needs a secondary app called mPaceline used either on a second screen or in slide over view on iPad.
    It’s an excellent bike and compatible with everything

    • By the way guys, you no longer need the Keiser Converter with the New Keiser M3i bike. It comes with the technology built in the console so it seamlessly connects and synchs all data including RPM and speed to major apps like Zwift and Peloton.

    • Yeah, mPaceline makes it work well with Peloton and the M3i has gotten better at working with other apps recently so it’s one of the better models out there if you ask me.

      • I’m using the keiser m3i converter, never used mPaceline. I wonder which one works better.

        • I think mPaceline works a bit better and it gets updated relatively often so I would go with that. The converter is a good alternative but I prefer mPaceline

    • Hello Cronan, thanks for stopping by

      Never tried it but I read that the mPaceline app pushes the HR and Cadence to the Peloton app even without the M Series Converter which is great because often the Converter doesn’t come included in the Bundle.

  5. Hey, I have a few questions. If anyone could answer them, I would be very thankful. If there are people that own a Keiser and can share from their experience, that would be awesome. I’m considering getting one but still have a few doubts. Thank you in advance!

    1. Is the Keiser M3i compatible with Zwift?

    2. Is a Keiser bike worth the money? I mean, why are Keiser bikes so expensive?

    3. How long will a Keiser bike last?

    • Some answers for you. Hope this helps.
      1. Is the Keiser M3i compatible with Zwift?
      No, it’s not but you can use the converter to make it work.

      2. Is a Keiser bike worth the money? I mean, why are Keiser bikes so expensive?
      Yes, Keiser bikes are well made and worth it in my opinion. If you can, just wait it out and get the money to buy one. It’s worth it.

      3. How long will a Keiser bike last?
      No idea yet but I think it will last a very long time if you take good care of it. I have mine for 3 years now and I’m hoping it lasts 10-15 years at least.

      • Thank you, Anda. Glad to know about the converter. I have also read good things about lifetime of these bikes and I am thinking they are indeed worth the cost.

        • 4. Is Keiser M3i quiet? If it’s too noisy then this is a no-no for me.
          A: Is Keiser M3i silent? Yes, it’s much more quiet than other similarly priced models. So, noise is not an issue.

          5. Does the Keiser M3 have Bluetooth?
          The M3 doesn’t have it, but the Keiser M3i has bluetooth.

    • For those that don’t know, there is a Keiser M3i converter (this is mentioned in this review as well) that can help with Keiser being able to work with Zwift or Peloton. Search for Keiser M3i converter to see what it does.

    • From what I know the Zwift app doesn’t work with Keiser. I don’t know why this isn’t fixed because many people would like this to work.

      • Yeah, they should definitely make sure Zwift and also Peloton works with Keiser. This is a no-brainer in my opinion as so many people want to use one of these two apps and when they see the Keiser m3i isn’t compatible with them, they just go for another bike.

  6. A few more questions 🙂 forgot to include them in my first comment.

    4. Is Keiser M3i quiet? If it’s too noisy then this is a no-no for me.

    5. Does the Keiser M3 have Bluetooth?

    6. What is the difference between Keiser M3i and M3i Lite?

    • Hi Charlotte! Thanks for stopping by and reading the Keiser M3i bike review.

      1. The Keiser M3i is very quiet, you will barely hear it when you are cycling indoors.
      2. The Keiser M3i has Bluetooth capabilities and the new models does no longer require the Keiser Converter to fully synch with Zwift and Peloton.
      3. The difference between the Keiser M3i and the M3i Lite is that the Lite has a fixed handlebar position, while the regular has a adjustable handlebar position to fit different users’ needs for a more comfortable indoor cycling exercise.

      I hope it answered your questions, let me know if you have any concerns

    • Thank you for all the answers. I found out a lot based on your experiences. I will be buying the Keyser M3i and am very excited for it 🙂

    • All very good questions that I would like answered as well.

  7. Is 20 minutes on exercise bike enough?

    • To stay in shape, yes, 20 minutes is enough, especially with the Keiser M3i indoor cycle. For losing weight, well it depends on how much weight we’re talking about and how fast. I would recommend 1 hour daily and you’ll also have to watch your food intake.

      • And you need to watch your food and eat healthier. Losing weight is mostly about the food you eat. Quality and quantity. The less you eat (without going hungry) the more you’ll lose. Combine this with a Keiser m3i indoor cycle and you’re golden.

      • 1 hour daily? Isn’t that a bit much? I would like to lose about 15 pounds in the next 3 months but I don’t see myself doing 1 hour every single day.

        • You can lose between 150-200 calories during a 20 minute session of moderately intense indoor cycling so you’ll lose 450-600 calories in an hour. That’s 4500-6000 calories in 10 days. So, you can lose weight but you’ll have to put in the work, daily.

    • Enough for what? Staying in shape? Losing weight?

  8. Thank you for the great Keiser M3i review and thank you for updating it from time to time. It makes it easier for newcomers like myself to find the right information without going to 10 different places. Well done!

    • Thank you for the great review, Daniel! We’re glad to have you as a part of our readership family and appreciate your feedback on this Keiser M3i bike review. In our guides and reviews, we strive to provide as much details as possible for our readers to make it easier to make their decision.

  9. For people saying Keiser M3i doesn’t work with Zwift, they are totally wrong. We’ve been on Zwift for nearly a year with it.
    Pro: very quiet, solid, adjustable for many family, no center bar, easy assembly.

    Con: The bike has rather gross height adjustments for the seat height and the M3i dongle (required to work with Zwift) is an extra charge (should be included with it).

  10. Great review i have had my M3i for over a year love it! quiet easy to setup no issues other than i had to replace the pedals .. they were squeaky. My question is and i cant find this anywhere . has anyone done a wattage comparison for accuracy? i.e. if the bike shows im pushing 300watts is that what power meter pedals are showing as well ? how much difference is there?

  11. The Keiser spin bike is a pretty good one from what I can tell although the price tag might be a bit too much for what it offers. I’m considering getting a m3i indoor bike but I’m still not sold on it. What are your personal experiences with Keiser m3i? The good, the bad and the ugly please.

    • Thanks. I’ve made up my mind.

    • Keiser m3i is good but I wonder which one would win in a keiser m3i vs Schwinn ic4 fight? I’m thinking Schwinn but not sure.

      • Schwinn ic4 is a bit better if you ask me. They’re both in the same price range, with Schwinn being better in component adjustability.

    • The M3i is worth the money. The M3 is not in my opinion because it lacks bluetooth and other important features.

    • If you have the money for it and want to stay in shape and think you’ll use apps like Peloton or Zwift, the keiser m3i spin bike is a very good choice. Get it and start. Keiser indoor cycle exercise bikes are some of the best out there and this model in particular is a good option.

    • It’s a pretty good bike that works well for both beginner and intermediate users. Doesn’t have enough features for advanced users I think.

    • I have the keiser m3i indoor cycle spinning bike and I recommend it. If you see yourself using it 2-3 times weekly, it’s well worth it. It will keep you healthy, wealthy and wise 🙂 You’ll probably want to get a heart rate monitor as it doesn’t have one but other than this, it gives you what you’ll need.

    • The Keiser M3i is a good one for the price. It may seem like it’s on the expensive side but it’s worth it. Especially with the converter that allows for easy work arounds with other important apps like Peloton or Zwift.

  12. Got the Keiser M3i indoor cycle a few months ago and I’m happy with my pick. The converter plus some other apps out there make things so much easier. I can now use all sorts of cool apps and bundled up with the Keiser make this a great way to stay in shape at home.

    • Ever since this pandemic started, I tried finding ways to stay in shape and got into indoor cycling. I do it 3-4 times each week and got a Keiser M3i indoor bike at the beginning of the year.

      • Since I couldn’t go to the gym anymore, I started doing workout at home and a friend mentioned how he stays in shape with indoor cycling and I was intrigued. I always wanted to get my own bike but never thought I would be using it indoors.

        • Keiser M3i (not M3) is one of the best options when it comes to cycling indoors. It does cost a penny but so worth it.

  13. I like their handlebars. It’s the most comfortable indoor bike I have used and I have used a few different models in gyms. I can feel it doesn’t “attack” the back as much as others do.

    • Me too 🙂 I thought I was the only one that loves them. I often had back pain after using an indoor cycle from my gym but now that I got my own Keiser M3i indoor bike, my back if feeling so much better. Every bike company out there should be copying this model.

  14. Too bad Keiser doesn’t have a heart monitor, that should have been included especially considering the price of this bike.

  15. Recently bought a keiser m3i indoor cycle with bluetooth wireless computer and I’m very happy I listened to my gut and actually bought it. I was on the fence about it, not knowing if I’d use it that often or whether it’s worth the money. But, ever since I got it, I’ve been constantly using it (almost daily) and I’m in the best shape I ever was!

  16. I own the M3 and I don’t understand why they don’t just add bluetooth functionality already! I mean, can’t they update this model? Do we have to get the M3i to get bluetooth? Seriously?!

    • Yep, that’s the only way. Maybe they’ll create a converter for the M3 but I’m not betting on it. I’m disappointed that Keiser isn’t trying to fix these problems that many owners are having.

      • I’ve even sent them messages asking for this feature and they said they don’t know for sure if it will ever get added, so…

  17. @ John
    I second what John has said. The Keiser M3i is quiet. You can cycle indoor in the same room with someone who’s asleep and you won’t bother them all that much (or at all depending on how hard of a sleeper this person is).

  18. @Rona – I’m following the Paleo diet for a few days now and I’m feeling good. I hope that helps plus I want to get a Keiser M3i indoor cycle very soon and start using it daily for 30 minutes or so.

    • Thanks gals. I guess I have to make some changes. I agree that a diet is not an end goal. It’s just something you do to lose weight usually. And I want more than that.

    • Indoor cycling + eating the right food for you = a great life at an optimal weight

      Eat more fresh veggies and fruits, less processed foods. Cook with less oil, eat less dairy products. Don’t eat the same things daily, diversify as much as you can. Eat different colored fruits and veggies as each offers something precious to our bodies.

    • The Paleo diet could be a good fit for a while, but I would focus on going for a lifestyle change rather than a diet. A diet is just something you do for a few days/weeks/months. Why not change your lifestyle and live a healthier life? You’ll be losing weight while you get healthier.

  19. So many details about so many things on this page! Such a good job! Bookmarked your site and we’ll be coming back and sending friends and family your way. Keep up the good work!

    • I’ve been coming to this site for a few months, researching different indoor bikes for myself, family and friends and I always found what I needed to make an informed decision. One of the best on the internet on the topic!

      • You can see that someone passionate about cycling is taking care of the site. There are many, many details bundled up together on each model. I love seeing sites like these, where you can find everything that’s worth including in the same place.

  20. I think you should update the Incompatible apps section and let people know that they can use the Keiser M3i converter to make the bike work with different apps.

    • The author mentions the Keiser M3i converter in the review but you’re right, maybe they can add that where the Incompatible apps section is so it’s easier to see and know. Lots of people don’t know about this.

  21. Hey, I’ve heard that you could actually do interval training with this bike. Is that true?

    • Yes, you can. You’ll have to set up the bike for interval training. You can find the instructions within this review. Just search for “interval training”

  22. Hmm, I didn’t know about the 60 seconds thing. If you stop pedaling for just 60 second, it resets everything to zero? That’s not good. Why don’t they add a pause button or something? 60 seconds is just not enough

    • Just one of the things missing from this otherwise great indoor bike. If they would take everything good from this model and take it to the next level, adding all the little things people are asking for, well, then we’d have a winner.

    • Yep, I got used to it and never take longer breaks but it’s a downside for sure. Keiser M3i has a lot of good things but it still lacks some important features like this.

  23. How many gears does a Keiser bike have?

  24. Does Keiser M3i have a power meter?

    • Yes, it does. The power meter of the m3i indoor bike is said to be very accurate. This was the first indoor cycling bike to pass the EN957-10 EU Standard for safety and accuracy.

  25. One of the best Keiser m3i reviews I’ve seen online. It’s complete, helps you with everything you need and offers good suggestions for apps and accessories.

  26. This Keiser M3i review is so detailed and helpful! This review has it all and leaves me with no questions or doubts. Thank you for your honest review of the Keiser M3i.

  27. 4.8
    Warranty and Customer Support
    Built Quality and Inspection
    Application Compatibility
    User Experience
    Resistance Technology

    Keiser M3i is possibly the best indoor cycle on the market today. It’s almost a 10 out of 10 from me. If the monitor was just a bit bigger I would say it was a 10. The quality is excellent and this will probably last 10+ years if handled with care.

    + PROS: Quiet Nice design No need for app subscription Very customizable
    - CONS: Monitor should be a bit bigger
    Helpful(9) Unhelpful(0)You have already voted this
    • Dear Clara,

      Thank you so much for taking the time to read my Keiser M3i review and leaving a comment. I truly appreciate your feedback and I’m glad to hear that you found the review helpful.

      I completely agree with you that the Keiser M3i is an exceptional indoor cycle. Its quality and durability are outstanding, making it a long-lasting investment for fitness enthusiasts. I understand your point about the monitor size, and while it may not be perfect, the overall performance and features of the bike make up for it.

      I’m also happy that you share my positive view of the Keiser M3i and believe it deserves a high rating. Your comment reaffirms the key aspects I highlighted in my review. It’s always great to hear from readers who have similar experiences and opinions regarding the product.

      Once again, thank you for your comment. If you have any further questions or need additional information, please don’t hesitate to reach out. We are here to help.

  28. 4.8
    Warranty and Customer Support
    Built Quality and Inspection
    Application Compatibility
    User Experience
    Resistance Technology

    I have my Keiser M3i since 2016 and hasn’t let me down once. And I’m pretty sure it will be here in 10 years as well. It almost looks brand new. You can see the quality in everything this bike has, from materials, seating, drive system (it’s so quiet!), etc.

    + PROS: Love the design this bike has Super Quiet Can easily change things around to fit your style Customer Support is very friendly and helpful
    - CONS: I wish the riding data could be saved on the monitor of the bike
    Helpful(7) Unhelpful(0)You have already voted this
    • Hi Susan,

      Thank you so much for taking the time to share your experience with the Keiser M3i! It’s truly remarkable to hear that you’ve been enjoying the bike since 2016 without any letdowns. And what’s even more impressive is your confidence that it will continue to perform flawlessly for another decade. It’s clear that this indoor bike has preformed very well for you.

      The quality of the Keiser M3i is evident in every aspect, from the choice of materials to the comfort of the seating and the incredibly quiet drive system. It’s remarkable how well it has held up over the years, maintaining its almost brand new appearance. This level of craftsmanship and attention to detail is something that sets Keiser apart.

      Keiser has built a reputation for producing high-quality and reliable exercise equipment. With regular maintenance and care, there’s every reason to believe that your Keiser M3i will continue to provide you with excellent performance for many more years to come.

      Once again, thank you for sharing your valuable feedback. Your firsthand experience and positive endorsement will undoubtedly be helpful to others who are reading this Keiser M3i review and considering to buy the Keiser M3i.

  29. 5
    Warranty and Customer Support
    Built Quality and Inspection
    Application Compatibility
    User Experience
    Resistance Technology

    Brilliant review! Thank you!

    Helpful(2) Unhelpful(0)You have already voted this
    • Dear Boris,

      Thank you so much for your kind words and positive feedback! I’m thrilled to hear that you found the Keiser M3i review helpful. If you have any more questions or need further information, please don’t hesitate to reach out. Your support means a lot, and I’m here to assist with any exercise bike inquiries you may have.

      Wishing you a fantastic day ahead!

      Best regards,


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