WSM Piston Kit - Yamaha - Standard 50-530PK Bionic-10 Carbon Knee Brace Set doubling closure security and a

doubling closure security and a quick release/locking system with self-aligning

Fitment: 2015 - 2019 Yamaha R1 / R1M

Power Pro with an industry-first 222° 2-into-1 heat shield system

Facial Contour System (FCS®) adds just the right amount of support by moving out of the way when putting the helmet on

WSM Piston Kit - Yamaha - Standard 50-530PK Bionic-10 Carbon Knee Brace Set doubling closure security and aQuality 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