12-18 KAWASAKI KX450F: Acerbis X-Grip Frame Guard (Silver/Black) The X-Grip is a frame guard that allows the rider to both protect the frame of the motorcycle from wear as well as adding more grip to the bike to hold onto. Made from a dual-injected mold; the outer plastic is durable polycarbonate while the inner plastic is durable yet pliable. Offers incredible grip. Sold as a pair.