Seller notes

Fits 2009 Polaris Sportsman 500 HO Black Diamond Exhaust Valve RAD Powersports Exhaust Valve 28mm (Oversize) Impregnated by a special German process Improved wear properties Reduced friction Resistance to corrosion and wear Designed using Finite Element Analysis software Tested on a computerized flow bench Lightweight and strong Excellent flow characteristics RAD Powersports Exhaust Valve 28mm (Oversize) Black Diamond Valves All RAD Powersports Black DiamondG stainless steel valves are impregnat...

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