Vertex stempel Race Evolution - YZ85 2002-2024

Forged piston developed with Vertex technology and race shape profile All pistons are heat-treated with a T-5 hardening and tempering cycle All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life Forged pistons are forged from 2618 aluminum for superior strength and durability Kits include piston, rings, wrist pin and circlips Replacement two-stroke piston rings sold individually; four stroke piston rings sold as a set