Description
A worn or suboptimal rocker arm shaft compromises valve timing accuracy and increases parasitic friction losses throughout your engine cycle. The JIMS Rocker Arm Shaft is precision-engineered to restore clearances to OEM specifications while reducing wear on critical valve train components, translating directly to improved throttle response and engine longevity. Whether you’re running stock or modified horsepower, this U.S.A.-manufactured component is essential maintenance for Evolution and Twin Cam engines demanding reliability.
- Fits 1984-1999 Big Twin
- Fits 1986-2022 Sportster
- Evolution engine compatible
- Twin Cam engine compatible
- CNC-precision engineered
- Domestic U.S.A. manufacture
- Reduces friction losses
- Minimizes valve train wear
- Bolt-on installation
- OEM-spec clearances
- MPN: 17611-83
