Honda CRF 250R Top End Rebuild Piston Kit 

Namura Piston Kit,
Includes Piston, Rings, Pin, Clips, Top End Bearing and Gasket Kit,
Stock Bore Size 78.00mm

Piston Measurements 77.96 - 77.97
Piston measurement tolerances of +/- .01mm

Fitment

Honda CRF 250R  2004-2009

Honda CRF 250X  2004-2017

Manufacture # FX-10035K

Namura's Piston Information

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.

Honda CRF250R 2004-2009 Top End Kit CRF250X 2004-2017