MOOSE RACING Piston Kit - 66.35 mm MSE23630B Quantum-X Solid Helmet Pro Race Piston increases the

Pro Race Piston increases the durability by reducing the stresses in the pin bore area

Limited 1 year warranty

The 12 mm slot can hold the damper rod while removing the rebound bolt at the bottom of the fork

WILL NOT FIT ON 15-21 YZ125/250

Forest Service approved and will reduce your bike's noise level at or near 96dB on most models Internal metal baffle

MOOSE RACING Piston Kit - 66.35 mm MSE23630B Quantum-X Solid Helmet Pro Race Piston increases theGravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life Coated skirts ease break in, decreasing wear and aiding in lubrication Wear resistant piston rings Wrist pins are nitride coated, providing a hardened, wear resistant bearing surface Piston rings are compatible with OEM pistons Piston kits include piston, rings, wrist pin and circlips Replacement rings are