Namura Piston Rings for Polaris 300 Models - 74.97mm - NA-50003-2R 1990 Yamaha YFM 350 WT Big Bear including seals and O-ring kit

including seals and O-ring kit (covers top and bottom)

05 kg/mm - 2

2004 Polaris Sportsman 700 Twin

2004 Yamaha YFZ450

Namura Piston Rings for Polaris 300 Models - 74.97mm - NA-50003-2R 1990 Yamaha YFM 350 WT Big Bear including seals and O-ring kitNamura Technologies Piston Rings Part Number: NA 50003 2R Piston Rings are an essential part of piston performance, engine efficiency, and durability. Namura piston rings are designed specifically for each application with the best materials and precise fitment. Composed of either a highly ductile cast iron or stainless steel alloy. Quality provide excellent wear resistance and a gas tight seal. Often overlooked and unglamorous, they are an essential