The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2021 | Yamaha | YZ125 | Base |
| 2020-2021 | Yamaha | YZ125X | Base |