Yana Shiki CK96-077 Performance Series Clutch Kit for Yamaha YZF R1 5VY Fits: YZF R1 5VY (04-06) Complete clutch kit contains friction discs, separator plates and springs Fibers are made of paper friction material Plates are made of SPCC and are 3 mm thick Tension strength of the springs approximately 10 percent stronger than OE