Minnovation Racing are now sole suppliers/distrbuters of the renowned Steve Maney Racing Cush Drive Unit that has been in continual production since 1995. The unit bolts direct with some modification to both our replica 4 bolt Triumph disc brake hub, and the genuine Triumph item, and features an extra bearing in the catch plate.The sprockets are mounted on 8 stubs that locate into the drive rubbers, for super fast gearing changes.