The race version of the popular Athena 70cc big bore kit.
Features:
- Complete kit includes: Shaped, domed cylinder head, state of the art cylinder with special porting, lighter flat top piston assembly (all of which are designed for higher compression and improved combustion efficiency)
- Also included: A forged crankshaft assembly with larger 12mm wrist pin, top end gasket set, 19mm Dell’Orto carburetor, carbon reed valve petals, and Athena racing exhaust system
- Throttle cable sold separately
- Replacement of clutch rollers and springs may be needed for proper tuning
Fitment:
2002 Yamaha YJ50 Vino
2002 Yamaha YJ50RA Vino Classic
2002 Yamaha YW50 Zuma
2003 Yamaha YJ50 Vino
2003 Yamaha YJ50RA Vino Classic
2003 Yamaha YW50 Zuma
2004 Yamaha YJ50 Vino
2004 Yamaha YJ50RA Vino Classic
2004 Yamaha YW50 Zuma
2005 Yamaha YJ50RA Vino Classic
2005 Yamaha YW50 Zuma
2008 Yamaha YW50 Zuma
2009 Yamaha YW50 Zuma
2010 Yamaha YW50 Zuma
2011 Yamaha YW50 Zuma