PISTON KIT BB FORGED 97.96/+3.0 12.0:1 YAM 57-3841BK using precision test fixtures

using precision test fixtures

and larger wear surfaces for even greater product longevity

and value to keep you grabbing gears for years to come

Works great in stock bikes too

trying not to bust your butt” situation…riders know exactly what we mean

PISTON KIT BB FORGED 97.96/+3.0 12.0:1 YAM 57-3841BK using precision test fixturesAll piston skirts are coated with a hi tech Molybdenum Disulphite coating for faster break in time and increased piston life Forged Big Bore pistons increase engines displacement, torque, and peak horsepower All pistons are heat treated with a T 5 hardening and tempering cycle Kits include piston, rings, wrist pin and circlips