WSM Piston Kit - Yamaha - Standard 50-530PK Core Leather Jacket Waist zipper allows connection to

Waist zipper allows connection to Alpinestars leather and textile jackets

ergonomically profiled pant for a performance fit and to allow for integration of knee protection

35% polyester

Thumb and palm reinforcement for a superior grip

WSM Piston Kit - Yamaha - Standard 50-530PK Core Leather Jacket Waist zipper allows connection toQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder Skirts have a nonabrasive, expansion retarding MOS2 coating to reduce heat and friction for added power and longevity MOS2 coating actually draws heat through piston walls and out the bottom Specially hardened tops add strength to ring grooves