Polisport Clutch & Alternator Cover Set Kawasaki Z650/N650 '17-'22Polisport Engine Cover Protectors were designed to be the best protections in the market. Through research and development, Polisport found the best materials to protect the engine from crashes and falls. They used a blend of highly resistant plastic with over injected metallic parts to increase the protection level. Polisport also took design seriously, with a minimalistic but high tech approach, never forgetting function, which is the crux of their