Description
A worn or damaged rocker arm shaft compromises valve train precision and can lead to catastrophic engine failure. The S&S Cycle rocker arm shaft restores OEM-spec alignment and clearances, ensuring consistent valve timing and reliable power delivery across your entire RPM range. Built to S&S’s exacting standards and manufactured in the U.S.A., this shaft delivers the durability your Twin Cam or XL 90 engine demands.
- Fits: Twin Cam/XL 90
- MPN: 90-4006
- OEM-spec dimensions
- Precision-ground finish
- Made in USA
- Bolt-on installation
- Restores valve train geometry
