PISTON KIT PERFORMANCE 57.94/STD KTM PISTON KIT 83.50/+0.50 POLWISECO 4 threaded mandrels

4 threaded mandrels

Gel inserts to protect lateral and medial sides of the knee

2001 Yamaha YZ250

Cylinder Piston Top End Kit High Performance 100cc 2 Stroke B=54mm Pin=12mm H=77mm

PISTON KIT PERFORMANCE 57.94/STD KTM PISTON KIT 83.50/+0.50 POLWISECO 4 threaded mandrelsAll piston skirts are coated with a hi tech Molybdenum Disulphite coating for faster break in time and increased piston life Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston Forged Replica pistons are forged from 2618 aluminum for superior strength and durability Forged High Compression pistons improve power and torque across entire rpm range