STM slipperclutch Yamaha R1 2004-2006

2004-2005 Yamaha R1 STM Slipper Clutch Kit

Used by the Pros, this system prevents downshift overrevs, downshift-braking rear wheel chatter to enable smoother cornering transitions while preserving the engine and reducing tire wear!

This "wet" system is to be used with the factory type friction and steel plates, factory basket, factory clutch cover, and a common premium grade motor oil. Each system is matched for the individual bike and contains a serial # for identification. Heavy duty diaphragm springs are also marked for precise adjustment if one cares to experiment with various settings by purchasing additional springs. All systems are equipped with a 2 piece hub separated by a 45 degree ramp angle which float on steel ball bearings when "slipping". This system does not increase clutch wear to an appreciable extent if installed correctly nor will the system allow for slippage during acceleration.

The kit consists of: