WSM Piston Kit - Polaris - Standard 010-831K Nucleon Flex Pro Shoulder Guards Oversized K&N® "XD Series" high-flow

Oversized K&N® "XD Series" high-flow air filter for high capacity and efficiency

E-Z Adjust assembly lets you adjust cable slack on the fly

100% Polyester

100% Cotton

Innovative instep fast lace adjuster controls the instep volume of the boot for a precise fitment and retention

WSM Piston Kit - Polaris - Standard 010-831K Nucleon Flex Pro Shoulder Guards Oversized K&N® "XD Series" high-flowQuality 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