CycleOps Mag Bike Trainer With Starter KitCycleOps Mag Bike Trainer With Starter Kit The easiest way to train indoors. Simply place your bike on the turbo, dial in the resistance unit, and pedal. The Mag turbo trainer comes with linear resistance to boost your workout intensity. With five adjustable level of resistance, you can mix up your interval sessions with ease. For the complete indoor training experience the Basic Mag Kit comes with a trainer mat, riser block, and useful sweat towel.