Namura Piston Kit for Yamaha YFM350 / YFM400 Models - 82.95mm - NA-40005 MPN_03-419 OEM springs tend to fatigue

OEM springs tend to fatigue rapidly

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Namura Piston Kit for Yamaha YFM350 / YFM400 Models - 82.95mm - NA-40005 MPN_03-419 OEM springs tend to fatigueNamura 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