The Keiser M3 is as close to perfection as you can get in an indoor cycling bike. Known for its smooth, comfortable, quiet ride, the Keiser M3 is built to last. The M3 includes an adjustable seat, smooth resistance shifter, dual-position handlebars, and adjustable Shimano pedals. The optional computer tracks your rpm, power output, calories, heartbeat rate, resistance, and distance. Krislynn is proud to be a provider of OEM original manufacturer replacement parts for Keiser exercise bike products.