- Big Bore Kit
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- Compatible Make
- Displacement
- Engine Type
- Item Length
- Length
Athena Big Bore Kit Yamaha YZ125 05-21 58mm 144cc
The kit includes the high-quality nikasil lined aluminum cylinder with 58mm bore, the cylinder head, the complete piston with the piston pin and rings, power valves, studs, and all the necessary gaskets. This kit takes your YZ125 to 144cc!