Kit de piston Pro Big Bore - 71,94 mm - Yamaha YZ250 1999-2004

Piston Kit (Cast BigBore)

• Cast-BB – Cast piston in original OE form for big bore cylinder
• 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
• Cast piston kits are gravity-cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
• Big Bore pistons increase engine’s displacement, torque, and peak horsepower
• Replacement two-stroke piston rings sold individually; four stroke piston rings sold as a set