Keiser Cardio M Series

M3i INDOOR BIKE

In 1996, Keiser set out to create an exercise bike that would exceed the demands of Indoor Group Cycling classes: an indoor bike that fits riders of all body shapes and sizes; a bike that achieves a quiet — but true — road bike experience inside your gym or home; and the ONLY stationary bike built in the United States to ensure the tightest quality control. And we accomplished it all with the Simplest of Engineering Designs.


KEISER M3i

VIRTUAL

EXPERIENCE

See how we built the bike through this exciting, interactive experience that guides you through all of the exacting specifications, wows you with exploded views of the bike’s innovative features and enlightens you with the science behind Keiser’s many industry firsts, proving why the M3i truly stands above the rest.


KEISER

INTERACTIVE

CYCLING

Enhance your rides & instruction with Functional Threshold Power (FTP) training and more from Keiser’s indoor cycling apps and group class system.

M Series
M Series Group
M Series Instructor

RIDER. GYM OWNER. TECHNICIAN.

DESIGNED AROUND YOU

The Keiser M3i is the industry’s only indoor group cycling bike built entirely around YOU – that’s YOU the rider, YOU the gym owner, and YOU the service technician. Game-changing features on the M3i include:

  • V-shape frame to match riders of all sizes
  • Rear-flywheel design for better protection from sweat and corrosion
  • Magnetic Resistance for a smooth and quiet workout
  • A self-tensioning, zero maintenance Poly-V Drive Belt
  • Revolutionary re-designed Keiser Bike Pedal
  • Bluetooth® wireless signal for open API for tablets and smartphones

KEISER INDOOR BIKE COMPUTER

ALL THE DATA YOU NEED ON A SINGLE SCREEN

We designed the M3/M3i Indoor Bike computer to be simple, with everything a rider needs to know on a single screen. This includes Cadence, Power, Kcals, Heart Rate, Ride Time, Odometer, Gear, and Trip Distance. Additionally, the high visibility, backlit console turns on when the light level is low and – unlike other indoor bikes – remains on.


13 THINGS TO LOOK FOR WHEN BUYING AN INDOOR GROUP CYCLING BIKE

THE BIKER'S DOZEN

Who exactly should an indoor group cycling bike be built for? It shouldn’t be built just for riders. Or gym owners. Or maintenance technicians. Rather, a truly great bike should be built for all three. But how can you tell? Download The Biker’s Dozen to find out.


PUSHING PAST INDUSTRY LIMITS

KEISER CARDIO M SERIES BIKE PEDAL

With our game-changing bike pedal, Keiser has again revolutionized indoor cycling down to the last detail. New pedal features include:

  • Stronger bearings tested for static and dynamic loads
  • Cage integrated into pedal design, not just added on
  • Ramped barbs for secure and simple foot placement
  • Curvature eliminating pressure points on the rider’s foot

THIS GROUP OF HIGH-END STUDIOS PROMISES A BEST-IN-CLASS RIDE.

SEE HOW THE GAME-CHANGING KEISER M3I HAS DELIVERED THAT PROMISE.


“♥️♥️♥️♥️”

4.7AVERAGE RATING 5 292

292 Reviews

Verified Purchase

LEE , Strasburg, VIRGINIA
Easy to assemble!!
Read More Reviews

SPECIFICATIONS

 Height
49" / 1245 mm
Width
26" / 661 mm
Length
51" / 1296 mm
Weight
92 lbs / 42 kg    

FEATURES

  • Keiser Integrated Technology using Bluetooth® connectivity
  • Automatic backlit digital display
  • V-shaped frame and handlebar combo to accommodate riders of all sizes
  • Corrosion-resistant design includes stainless steel hardware and rear flywheel
  • Revolutionary re-designed Keiser Bike Pedal
  • Quiet, low-maintenance magnetic-resistance belt-drive system
  • Magnetic resistance delivers road-bike experience and ensures a smooth ride
  • Lightweight for superior ease of transport
  • With more than 300,000 M Series bikes sold, there’s no more proven bike worldwide
  • Robust adjustment knobs require less maintenance than cam-locks
  • Four-way adjustable seat
  • Four-way adjustable handlebars
  • Media tray
  • Stretch pads
  • Water bottle holder
  • Keiser Education and Certifications available

FREQUENTLY ASKED QUESTIONS

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What is the difference between the Keiser M3, M3i, M3X and M3iX indoor bikes?

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Can I train heart rate on Keiser M Series indoor bikes?

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Which heart rate monitors are compatible with Keiser M Series indoor bikes?

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How does Bluetooth® wireless technology work on the Keiser M3i and M3iX indoor bikes?

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Are there differing commercial and residential versions of Keiser M Series indoor bikes?

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Are there used/refurbished Keiser M Series indoor bike models available?

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Can I finance exercise equipment for my home?

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What is the warranty for Keiser M Series indoor bikes?

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What are "kcals"?

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What if my bike is damaged during shipping?

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I'd love to buy an M3i but I live outside the United States. What are my options?

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I placed my order but haven't heard back yet, how can I check the status of my order?

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Do you ship to APO/FPO addresses?

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Why are the Keiser M3/M3i bikes designed with a light flywheel?

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Does the M3i include a media holder?

Keiser Demo Van

We'll bring the power of Keiser to you

DEMO UP TO 7 MACHINES IN 60 MINUTES –
AT YOUR FACILITY.

Request a visit from our NEW Keiser Demo Van and “Demo the Keiser Difference” – in the convenience of your own facility. In just one hour, you and your team can try out as many as seven Keiser machines, including Strength, Functional and Cardio.

Learn More

COMPONENTS

PAINT / UPHOLSTERY

Keiser offers numerous options to customize your equipment. With upholstery color and frame painting options you can finally get the machine that suits your facilities needs or personal tastes. Lead time is required for most custom orders. Please contact us for more information.

PAINT / UPHOLSTERY

Keiser offers numerous options to customize your equipment. With upholstery color and frame painting options you can finally get the machine that suits your facilities needs or personal tastes. Lead time is required for most custom orders. Please contact us for more information.

ACCESSORIES - STANDARD

STRETCH PADS

Stretch Pads provide a convenient place for a pre and post-ride stretching and are standard on the M3i and M5i.

STRETCH PADS

Stretch Pads provide a convenient place for a pre and post-ride stretching and are standard on the M3i and M5i.

MEDIA TRAY

Media Tray provides a convenient spot for reading material or personal electronics and is standard on the M3i and M5i.

MEDIA TRAY

Media Tray provides a convenient spot for reading material or personal electronics and is standard on the M3i and M5i.

KEISER M SERIES APP

Easily track and record your rides with real-time graphs for power and cadence range dials. More advanced users can add on the ability to test and track Functional Threshold Power (FTP) directly within the app. The Keiser M Series Cycling app is available for Apple® or Android™ devices via the App Store® or Google Play™.

KEISER M SERIES APP

Easily track and record your rides with real-time graphs for power and cadence range dials. More advanced users can add on the ability to test and track Functional Threshold Power (FTP) directly within the app. The Keiser M Series Cycling app is available for Apple® or Android™ devices via the App Store® or Google Play™.

KEISER M SERIES GROUP APP

With the Keiser M Series Group app, featuring Functional Threshold Power (FTP) Training, indoor cycling instructors can enhance their teaching capabilities to easily transform classes into fun and fiery competitions that inspire riders and keep them coming back for more.

KEISER M SERIES GROUP APP

With the Keiser M Series Group app, featuring Functional Threshold Power (FTP) Training, indoor cycling instructors can enhance their teaching capabilities to easily transform classes into fun and fiery competitions that inspire riders and keep them coming back for more.

M SERIES INSTRUCTOR APP

With the M Series Instructor app, instructors can view all the Keiser M3i bikes, M5i Strider Ellipticals, and M3i Total Body Trainers in a group class in a single list, with options to sort live data in a simple scrolling view.

M SERIES INSTRUCTOR APP

With the M Series Instructor app, instructors can view all the Keiser M3i bikes, M5i Strider Ellipticals, and M3i Total Body Trainers in a group class in a single list, with options to sort live data in a simple scrolling view.

ACCESSORIES - OPTIONAL

DUMBBELL HOLDER

Add an upper body workout to your ride. The optional Keiser M3/M3i Dumbbell Holder is designed to hold two hand weights, weighing up to 5 pounds apiece, and installs easily in minutes. 

DUMBBELL HOLDER

Add an upper body workout to your ride. The optional Keiser M3/M3i Dumbbell Holder is designed to hold two hand weights, weighing up to 5 pounds apiece, and installs easily in minutes. 

M3i TOOL KIT

Add the M Series Assembly & Maintenance kit to your order and get riding on day one. You'll receive everything you need to assemble and maintain your new bike, including the torque wrench and crowfoot wrenches. 

M3i TOOL KIT

Add the M Series Assembly & Maintenance kit to your order and get riding on day one. You'll receive everything you need to assemble and maintain your new bike, including the torque wrench and crowfoot wrenches. 

CONVERTER

For Home Use Only: Your M Series bike purchase allows you to virtually take your indoor cycling workouts to the road with the M Series Converter. Connect your Keiser M3i to more of your favorite applications like Zwift and Sufferfest for the ultimate road-bike experience.

CONVERTER

For Home Use Only: Your M Series bike purchase allows you to virtually take your indoor cycling workouts to the road with the M Series Converter. Connect your Keiser M3i to more of your favorite applications like Zwift and Sufferfest for the ultimate road-bike experience.

TALK TO A SALES REP TODAY

+1 559 256 8000 Speak to a sales representative

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TO CONTACT KEISER'S SERVICE DEPARTMENT PLEASE FILL OUT THE FIELDS BELOW. 

Stay Connected With Keiser

Notify me of Keiser Corporation news, events and offers via Email

Keiser will never share your personal information with third-parties

View our Privacy Policy