Namura Piston Kit 53.94mm Standard Bore 10.8:1 Compression with Rings, Wrist Pin & Clips for Yamaha YZ125 (NX-40001)

Bore: 53.94mm
Compression: 10.8:1 Compression
Sizing: Standard Bore

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 H-D the following vehicle applications:
fits YAM YZ125 2002-2004