Keiser M3i Indoor Cycling Bike

The Keiser M3i adds an electronically controlled magnetic resistance system on top of the standard M3 platform, giving riders 24 defined resistance levels instead of a manually adjusted dial. That makes it easier for instructors to call out specific resistance numbers during class and have every rider landing on the same actual load. It keeps Keiser's core advantages: a belt-drive system, magnetic braking with no contact parts to wear out, and a quiet ride. This individual M3i has been serviced and tested by our team before being listed.