The Keiser M3 Indoor Spin Cycle is different than any other cycle as it has been under development for more than 10 years. Everything from the handlebars down to the base of this bike has been quality tested and dissected by Keiser. The eddy current resistance system is the foundation of the M3, which provides unlimited resistance. This means that you can always push yourself further to get in better shape. It has magnetic resistance for consistency and durability. The M3 offers a fully adjustable seat, up down, forward, and backward. Read more...