The Barnett performance clutch kit for the 2006-11 Kawasaki ZX-10R features Carbon Fiber friction plates and a set of heavy duty clutch springs. The 'CF' clutch plates have exceptional heat tolerance and the segmented design increases oil flow through the clutch resulting in longer life and more consistent performance. The heavy duty clutch springs are 10% stiffer than stock, shot-peened and heat treated. To order, please contact your dealer. Made in the USA- since 1948.