Description
The Circuit Breaker shaft is critical to your Big Twin’s ignition system reliability—a worn or damaged shaft leads to timing issues, misfires, and reduced engine performance. This JIMS kit delivers a precision-engineered replacement shaft paired with two high-strength bushings, restoring your ignition timing accuracy and preventing the electrical dropout that can strand you on the road or track. Built to OEM specifications and manufactured in the U.S.A., it’s the dependable solution for riders who demand consistent performance.
- Fits: 1936–1969 Big Twin
- Includes: Shaft and bushings
- Material: High-strength steel
- Installation: Bolt-on replacement
- Manufacturing: U.S.A.-made
- MPN: 25856-KIT
