Wiseco 4815M05700 57.00mm 11:1 Compression 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 +10.6cc domed piston 2244XE ring set 125cc