WSM Piston Kit - Yamaha - Standard 50-530PK Mini Factory 4.1 Slip-On Muffler Clean design with maximum airflow

Clean design with maximum airflow

Open cell PU foam ankle disc protector for additional protection Internal EVA patch material between outer and inner materials reduces pressure on foot in gear shift area for optimized levels of comfort

Titanium construction throughout head pipes

Heather/Burgundy Hooded Pullover Sweatshirt

back of legs

WSM Piston Kit - Yamaha - Standard 50-530PK Mini Factory 4.1 Slip-On Muffler Clean design with maximum airflowQuality 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