CK Series Clutch Kit by EBC. Complete Engine sets of stack height controlled friction plates featuring the EBC unique alloy particle impregnated clutch facings that prevent burn up or slippage. Every CK kit is matched and measured to give you a perfect stack height. Never try to fit individual plates is the EBC recommendation. Almost identical to original equipment clutch plates the CK series are a cork based product impregnated with aluminum particles to increase wear life and heat resistance. Material is highly compressed to avoid swell and clutch drag and is an ideal general purpose replacement material for all grades and sizes of motorcycles. Never try to fit individual plates is the EBC recommendation.