Namura Technologies NA-50000-2K Top End Repair Kit - 0.50mm Oversize to 73.46mm

Bore: 73.46mm
Sizing: 0.50mm 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:

1989-1992 Polaris Big Boss 250 4x6
1991-1992 Polaris Big Boss 250 6x6
1990-2006 Polaris Trail Blazer 250
1991-1999 Polaris Trail Boss 250
1988-1993 Polaris Trail Boss 250 2x4
1987-1993 Polaris Trail Boss 250 4x4
1985-1988 Polaris Trail Boss 250R/ES
2000-2002 Polaris Xplorer 250 4x4