Keiser M3 / Keiser M3+ / Keiser M3i Comparison Chart


Compare, Research, and Review the differences, features, and specs of Keiser M3 / Keiser M3+ / Keiser M3i Fitness Superstore. The article below provides details per bike, so you can know differences from one model vs another model or version.

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Images
Type
Console
Electronic Readouts
Resistance System
Infinite Resistance Adjustment
Flywheel
Heart Rate Monitoring
Pre-set Holes in the Adjustment Pole
Connectivity
Four-Way Adjustable Seat Position
Adjustable Handle Bars
Anti-Slip Belt
Smooth Resistance Shifter
Wheels for easy transportation
Non Wear Magnetic Resistance
Virtually Maintenance Free
Water Bottle Holder
Certifications
Machine Weight
Maximum User Weight
Dimensions
Keiser M3 Indoor Cycle w/ Computer Keiser M3+ Indoor Cycle Keiser M3i
Spin Bike Spin Bike Spin Bike
Computer with Backlit M Series Display Computer with Backlit M Series Display M Connect Display
RPM (Revolutions Per Minute), Power Output Displays in Watts (currently generating), Heart Rate (Polar compatible), Pedaling Time, Gear (Resistance) (1 to 24 gears), Odometer / Trip Distance RPM (Revolutions Per Minute), Power Output Displays in Watts (currently generating), Heart Rate (Polar compatible), Pedaling Time, Gear (Resistance) (1 to 24 gears), Odometer / Trip Distance Kcals, heart rate, ride time, odometer, trip distance, and gear, all on one screen
Magnetic Magnetic Magnetic
Yes Yes Yes
8 lbs 8 lbs 8 lbs
Polar H9 Heart Rate Monitor Polar H9 Heart Rate Monitor Polar H9 Heart Rate Monitor
None None Yes
None None Bluetooth
Up, Down, Forward, and Backward Up, Down, Forward, and Backward Up, Down, Forward, and Backward
Height Only Yes (Fore and Aft Adjustable Handlebars) Yes (Fore and Aft Adjustable Handlebars)
No adjustment Needed No adjustment Needed No adjustment Needed
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Unknown Unknown EN957-10 European Standard
85 lbs (33.5 kg) 140 pounds (63.5 kg) 92 lbs (42 kg)
300 lbs (136 kg) 300 lbs (136 kg) Up to 350 lbs (158.8 kg)
49" L x 26" W x 45" H (124.5 cm x 66.04 cm x 114.3 cm) 48.3″ L x 25.8″ W x 44.5” H (113 cm x 65.4 cm x 122.6 cm) 51" L x 26" W x 49" H (129.6 cm x 66.1 cm x 124.5 cm)
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Additional Info:

  • Keiser M3 Indoor Cycle w/ Computer
    The Keiser M3 is an highly rated bike but it is hampered by a handlebar that doesn’t move horizontally. This causes more of an issue on this bike than other spin bike models due to the upright post that the handlebar adjustment pole slides into is angled at 45 degrees and not close to perpendicular.
    This means that as you increase the height of the handlebars they are moving away from you, the opposite issue is when you are lowering the bars it is getting closer to you. This can result in the handlebars not being in the most efficient position to maximise the benefit of a workout.
    You can end up with the handlebars too far away from you or too close to you to get a comfortable fit. Not everyone has an issue with this but it is a risk to be aware of with the bike as everyone’s torso and leg measurements are different even when they’re the same height.


  • Keiser M3 Plus Indoor Cycle
    The Keiser M3 is an highly rated bike but it is hampered by a handlebar that doesn’t move horizontally. This causes more of an issue on this bike than other spin bike models due to the upright post that the handlebar adjustment pole slides into is angled at 45 degrees and not close to perpendicular.
    This means that as you increase the height of the handlebars they are moving away from you, the opposite issue is when you are lowering the bars it is getting closer to you. This can result in the handlebars not being in the most efficient position to maximise the benefit of a workout.
    You can end up with the handlebars too far away from you or too close to you to get a comfortable fit. Not everyone has an issue with this but it is a risk to be aware of with the bike as everyone’s torso and leg measurements are different even when they’re the same height.

  • Keiser M3i
    This bike builds on the M3 plus, retaining the adjustable handlebars. One of the issues with many spin bikes is the inability to be able to upload training and workout data so that you can analyze and track performance over time.
    With the previous 2 models the console allowed you to see how you were performing while working out but did not record or upload the data. With the M3i using bluetooth and a free app you can pair it with a iOS mobile device and use it for storing workout results and analyse them further.
    The app does a reasonable job at allowing you to do this. However, there isn’t the ability to use other Apps or upload to other internet accounts like Strava for more analysis with outdoor rides and share with your friends.
    The M3i has pre-set holes in the adjustment pole. You don’t have to use them when adjusting the height of the seat as you can tighten it in place to height you want. It is there as a safety feature so that if the adjustment knob hasn’t been fully tightened the seat will only slip to down to the nearest hole.
    Other than that the bike is the same as the M3 plus keeping the same adjustable handlebars.