Barnett Extra Plate Clutch Kit. Carbon fiber plates have high static and dynamic coefficient of friction for smooth, positive engagement and release. Aramid fiber plates have a higher-density compound. Aramid fiber friction plates provide increased durability. Steel plates are manufactured under strict quality-control standards. Adds 11% more surface area to clutch pack. Includes one extra friction and steel plate to add 10% to clutch capacity. Made in the U.S.A. Note: Includes 10 frictions and nine steels. For Twin Cam models without slipper / assist clutch.