Piston Kit - 77.00 mm - Yamaha YZ250F/FX | WR250F
R&D developed to provide dyno-proven power gains
Asymmetric skirt design for improved wear and even loading on major thrust skirt
Precision fit ring; custom-lapped compression ring for improved power
100% billet machined for superior strength-to-weight ratio and optimized fit
High compression (14:1 for 450cc, 14.5:1 for 250cc) for maximum torque and throttle response
Dome design improves flame travel to maximize air/ fuel burn efficiency
DLC-coated piston pin reduces friction and improves scuff resistance
Enhanced pin oiling for improved lubrication and reduced friction
Pressure seal groove reduces ring lifting and power loss
ArmorGlide® skirt coating reduces friction for quieter operation, improved scuff resistance
Pistons include rings, pin, and circlips