Bore: 83.50mm
Compression: 8.6:1 Compression
Sizing: 0.50mm Oversize
Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit. MOS2 (made with Teflon™/Molybdenum) Coated Skirts A rolled on application process provides a fits 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.
This item fits the following vehicle applications:
2000-2004 fits YAM YFM400 Big Bear 2x4
2000-2006 fits YAM YFM400 Big Bear 4x4
2007-2012 fits YAM YFM400 Big Bear IRS 4x4
1993-1999 fits YAM YFM400F Kodiak 4x4
