Namura Technologies NA-40080K Top End Repair Kit - Standard Bore 46.96mm, 9.6:1 Compression

NA-40080 series does not have machine smooth domes.

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:

1985-1988 Yamaha YFM80 Badger
1992-2001 Yamaha YFM80 Badger
2005-2008 Yamaha YFM80 Grizzly
2002-2008 Yamaha YFM80W Raptor