Namura Oversized Piston Kit for Polaris Sportsman / Scrambler 850 - 87.93mm - NA-50012-4 MPN_2376M07700 1989 Yamaha TT600

1989 Yamaha TT600

1988 Yamaha YFM350 Big Bear

insulation coatings and connectors to make this ESG421 a plug in replacement

Part Number: 4419 (13031-0771)

Namura Oversized Piston Kit for Polaris Sportsman / Scrambler 850 - 87.93mm - NA-50012-4 MPN_2376M07700 1989 Yamaha TT600Namura 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