Primary Chain Adjuster. Fits Dyna 2006 & all Twin Cam 2007-2017.


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Features & Benefits:-

* Reduction in vibration

* Constant and correct tension at all times

* Does not over tighten like the OEM ratchet design

* Smoother shifting

* Extends the life of your primary chain

Tech Tips:-

* Not necessary to remove the primary chain for installation

* Replaces OEM # 39929-06

Proudly made in the USA!