Namura Technologies NA-40007-4K Top End Repair Kit - 1.00mm Oversized to 96.00mm, 8.5:1 Compression

Bore: 96.00mm
Compression: 8.5:1 Compression
Sizing: 1.00mm Oversize

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:

1984-1995 Yamaha XT600
1998-2001 Yamaha YFM600FW Grizzly 4x4
1987-2006 Yamaha YFZ350 Banshee