PISTON KIT BB CRF250R/RX 18-19

Piston Kit (Forged Big Bore)Pro-BB – Forged piston in original OE form for big bore cylinderAll 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 Big Bore pistons increase engine’s displacement, torque, and peak horsepower Kits include piston, rings, wrist pin and circlips Replacement two-stroke piston rings sold individually; four stroke piston rings sold as a set