WSM Piston Kit - Polaris - +1 mm 50-305-07PK Rear Suspension Knuckle Kit Shin zone incorporates a TPU

Shin zone incorporates a TPU blade system engineered to prevent frontal hyper-extension and offer greater flex control

The carbon fiber heel guards are designed to be functional as well as look great

The Mini Powercore 4 is the best bang for your buck performance bolt on for your mini

Synthetic accordion inserts and stretch fourchettes in between the fingers

WSM Piston Kit - Polaris - +1 mm 50-305-07PK Rear Suspension Knuckle Kit Shin zone incorporates a TPUQuality 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