WSM Piston Kit - Yamaha - Standard 50-520PK Scorpion Pressure Plate Owens-Corning fiberglass replacement packing keeps

Owens-Corning fiberglass replacement packing keeps silencers performing as they're meant to

Screwdriver bit sizes – Phillips #2 and slotted 4 mm

80g PrimaLoft® Silver insulation for warmth retention in cold conditions

End tabs clip into cheek pads to create a closed breath box to keep your warm breath from getting into your shield and creating fogging issues

Snap button system to integrate Alpinestars Nucleon back protector (sold separately)

WSM Piston Kit - Yamaha - Standard 50-520PK Scorpion Pressure Plate Owens-Corning fiberglass replacement packing keepsQuality 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