Athena Cylinder Kit Hyper Race W/Head 46.6MM 070200 for Yamaha CW50 Zuma II / YJ50 Vino & More

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

• 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.

Fits

• Yamaha CW50 Zuma II: 2013
• Yamaha YJ50 Vino: 2001-2004
• Yamaha YJ50RA Vino Classic: 2002-2005
• Yamaha YW50 Zuma: 2002-2005, 2008-2011