Uses the same frame and wide diameter as the Road Machine 2.0. 6.25lb flywheel, largest in the industry, allows for a smooth and realistic rideIndex thumb shifter puts precise resistance your fingertips. Ideal trainer for lower geared MTB and cyclocross bikes. Ultra quiet, smooth and runs at a cool temp. Compatible with all bikes with 22 29 diameter wheels wheels with less than 22 outside diameter require small wheel adapter TRAN8200, which is sold separately. Now compatible with 29er wheels with knobbiesNew resistance unit RU tension system eliminates bending of frames and L bolts from over tightening. New ergonomic touch points. Refreshed paint and graphics. New boxes act as POP and include bar coded serialization for better tracking of product.Bicycle and other accessories not included, only the Magnetic Trainer.