Don't let Ol' Man Winter get the best of you, get strong with Giant's Cyclotron Fluid Comp Trainer. Using a 17.6-pound flywheel and Real Road Simulation technology, the Cyclotron provides up to 2000 watts of quiet, smooth, progressive resistance. Well thought out details abound like the TurboTron 70mm roller with internal cooling fins that reduce heat build up and prolong your tire life. The pre-loading coupler and torque-set knob makes bike installation and removal a snap, too. Go ahead, jump out of the saddle and work it, the F4 fluid-formed aluminum frame provides incredible stiffness, while the anti-skid feet keep your trainer stable and your floors clean. A riser block is included so you can keep your bike level for an excellent, realistic ride. Best of all, it'll fit all your bikes, from 24-inch up to 700c wheels.