Namura Oversized Piston Kit for Yamaha YFB250 / YFM250 Models - 71.45mm - NA-40015-2 feed-mpn-C3249-EST 2004 Polaris Sportsman 500

2004 Polaris Sportsman 500

2005 Honda XR650R

2010 Yamaha FX Nytro MTX SE w/162in

2017 Yamaha YZ450F

Namura Oversized Piston Kit for Yamaha YFB250 / YFM250 Models - 71.45mm - NA-40015-2 feed-mpn-C3249-EST 2004 Polaris Sportsman 500Namura Technologies Piston Kit Namura gives you a higher performance piston without the higher price MOS2 Coated Skirts increase heat transfer and reduce friction to eliminate cold seizures. Higher silicon content reduces expansion rates and increaseswear resistance. Machined Smooth Heads Reflect combustion heat and reduces carbon buildup. Namura piston kits come with the piston, a set of OEM quality rings, a wrist pin, and circlips. Why replace your