Since 1948, american Barnett specializes in manufacturing clutch systems for motorcycles. The material Barnett uses to create clutch friction plates is Kevlar and Carbon-fiber. Barnett tempered steel drive plates go through a vibratory deburring process and then are quality checked for flatness to provide optimum performance. Heavy duty Barnett clutch springs are pre-set, shot-peened, and heat treated for performance and durability. Also, clutch steel plates are made of tough steel and there are also "cryodized" plates which offer exceptional durability along with low weight. Barnett's clutch baskets have steel inserts at touch points with plates resulting in less wear and better movement of the plates. Their pressure plates are made with CNC machines, they, too, have steel inserts are touch points with plates. Their new clutch covers are precision machined out of billet aluminum and have a tough powdercoat textured black finish with a contrast cut Barnett logo. Great looks and durability is what you get with these Baja tested and proven clutch covers.