The Factory Fatty is reminiscent of the "works" or cone pipe once used by Factory Teams. It shares many of the same characteristics with its craftsmanship and material quality. The Factory Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you're looking for.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2026 | Yamaha | YZ250 | Base |
| 2024 | Yamaha | YZ250 50th Anniversary Edition | Base |
| 2026 | Yamaha | YZ250 70th Anniversary Edition | Base |
| 2022-2023,2025 | Yamaha | YZ250 Monster Energy Yamaha Racing Edition | Base |
| 2001-2026 | Yamaha | YZ250F | Base |
| 2024 | Yamaha | YZ250F 50th Anniversary Edition | Base |
| 2026 | Yamaha | YZ250F 70th Anniversary Edition | Base |
| 2021-2023,2025 | Yamaha | YZ250F Monster Energy Yamaha Racing Edition | Base |
| 2015-2026 | Yamaha | YZ250FX | Base |
| 2016-2026 | Yamaha | YZ250X | Base |