Wiseco 4989M10241 102.41mm 10.5:1 Compression 675 Motorcycle Piston Kit Wiseco's forged pistons are tougher and more durable than cast pistons, and will stand up to the abuse that high performance motorsport applications require Piston kits contain one piston, rings, piston pin and piston pin circlips Dished piston with moly-coated skirts 4032GFX ring set 675.6cc