Description
Features
- Simple but effective way to shift the torque curve to favor the low-end to mid-range band of the rev range
- CNC-machined, eliminating interference problems when installing; includes gaskets and bolts
- Insert spacer between cylinder and reed valve
- Made in the USA
| Position | Notes | |||
|---|---|---|---|---|
| 1989-1996 | Yamaha | YZ250 | - | - |
| 1985-1986 | Yamaha | YTZ250 Tri-Z | - | - |
