Namura Technologies NA-40006K Top End Repair Kit - Standard Bore 83.00mm, 8.6:1 Compression

Bore: 83.00mm
Compression: 8.6:1 Compression
Sizing: Standard Bore

Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit. MOS2 (Teflon/Molybdenum) Coated Skirts A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%. Anodized Domes Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons. Hypereutectic Casting Process Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures.

Vehicle Fitment:

2000-2004 Yamaha YFM400 Big Bear 2x4
2000-2006 Yamaha YFM400 Big Bear 4x4
2007-2012 Yamaha YFM400 Big Bear IRS 4x4
1993-1999 Yamaha YFM400F Kodiak 4x4