Top End Piston Kit - 96.94 mm - Yamaha YZ450F
The piston is heat-treated with a T-5 hardening and tempering cycle
The piston skirt is coated with high-tech Molybdenum Disulphite to allow faster break in time and increased piston life
Forged piston kit is forged from 2618 aluminum
Forged replica piston is a forged OEM replacement
Top-end piston kit includes piston, rings, pins, circlips, top-end gaskets and cam chain