Description
A worn or inferior rocker arm shaft compromises valve train efficiency and accelerates component degradation in your Big Twin—leading to lost performance and costly rebuilds. The JIMS Rocker Arm Shaft restores precise valve timing and reduces friction across the entire drivetrain, ensuring your engine operates at peak efficiency. Built to OEM specifications and manufactured in the U.S.A., this is a direct bolt-on upgrade that delivers measurable improvements in reliability and longevity.
- Fitment: 1966-1984 Big Twin
- Manufacturer: JIMS
- Part Number: 17611-66B
- Installation: Bolt-on
- Origin: U.S.A. manufactured
- Material: Precision-engineered steel
- Function: Valve train optimization
- Benefit: Reduced wear
- Benefit: Improved efficiency
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