Namura Piston Kit for Polaris 250 Models - 71.96mm - NA-50000 feed-mpn-151119X 1984 Yamaha YZ490

1984 Yamaha YZ490

2014 Arctic Cat M 8000 153"

Fits: 1990-91 Kawasaki KX250 Images are for reference ONLY and maybe only categorical representations of items listed

1976 Yamaha YZ125

Part Number: 810814

Namura Piston Kit for Polaris 250 Models - 71.96mm - NA-50000 feed-mpn-151119X 1984 Yamaha YZ490Namura 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