WSM Piston Kit - Polaris 300 - +1 mm 50-310-07PK Tri Fit Handguards Optimized Graves Spec flash tune

Optimized Graves Spec flash tune maps on the FTEcu database for tuning (product shown below in up-selling links)

Features intermediate oval shape which fits the majority of head shapes in the North American markets

Available with standard nylon-lined

Developed over years of championship off-road racing

Made in Italy

WSM Piston Kit - Polaris 300 - +1 mm 50-310-07PK Tri Fit Handguards Optimized Graves Spec flash tuneQuality 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