EBC Brakes CSK197 Coil Type Clutch Spring Kit These are spiral wound springs using 4-8 pieces per set made from heat treated high carbon steel EBC heavy duty spring kits have slightly thicker winding material and deliver 10-15 percent more clamp pressure This can help reduce clutch slip or fast clutch wear on your machine All springs get tired and should be replaced at every engine rebuild or clutch overhaul May contain one or more extra springs which can be discarded