Big bore kit to increase displacement. Typically includes cylinder, piston, and necessary gaskets.
Athena is an Italian manufacturer of cylinder kits, big bore kits, gasket sets, and oil seals for various models.
Fits these engines
- Yamaha WR450F 2003-2006
- Yamaha YZ450F 2003-2005
- Brand: Athena
- Type: Big bore kit
- Engine brand: Yamaha
- Model: WR450F, YZ450F
- Year: 2003-2006
- Article number: 420-0485-100014
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