Converts your diaphragm spring clutch system to six coil springs CNC-machined billet pressure plate Ideal for stock to high-performance motors Allows for more precise adjustment and smoother operation Increases the holding capacity of the clutch Includes two sets of coil springs to provide three different pressure options Utilizes the stock clutch hub, shell and clutch plates Made in the U.S.A.. SPRING CONV 98-BT W/HYDR