Kinetic Magnetic 3.0 Trainer Train like the pros Made using the highest quality components The most trusted name in cycle trainers This standard for magnetic trainers - precision engineering and unique design - offers 9 levels of smooth, quiet resistance perfect for mountain bike gearing or climbing simulation Largest flywheel of any magnetic trainer gives realistic road feel Large diameter roller reduces tire wear and provides a smoother ride Fits 22" to 29" wheels-up to 29 x 2.4" tires sizes