ULTRA Add-on is designed to fit any motorcycle (Dirt, Cross, Enduro, Street, Sport, etc.) if it is not a single-sided swingarm one and the rear tire diameter is within the indicated limits:
MIN: 31cm and MAX: 75cm
This addon can be attached to the V5 bodies as well if you would like to upgrade your Wheelie Trainer. It significantly extends the usability and the wheel sizes range.