MENTEX

 PRO-RACE  PISTON KIT FOR

YAMAHA

YZ 125

 2005 TO 2021

53.95mm  SIZE-B

KIT COMES COMPLETE WITH.

X1 MENTEX PISTON

X1 RIK PISTON RING

X1 GUDGEON PIN

X2 C-CLIPS

X1 SMALL END BEARING

X1 MENTEX TOP END GASKET SET

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 build up, 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.