Cylinder Kit Hyper Race W/Head 46.6mm

The race version of the popular Athena 70cc big bore kit, available in one part number. All parts are available separately for custom builds.

Features:

• Cylinder kits include cylinder, head, piston assembly, reeds, and gaskets
• Piston kits include piston, rings, wrist pin, and circlips
• Carburetors have a manual choke assembly
• Hyper Race crankshafts have a lighter connecting rod, full crank rounds, and special needle bearings, but will not work with OEM type stock or standard Athena big bore pistons due to the larger 12mm wrist pin size.