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- York M6 auto primary chain adjusting kit for Harley-Davidson Twin Cam
- Kit includes mount bracket and nylon shoe, inner guide, outer guide, inner and outer spring, shim, and adjuster pad
- The spring loaded is self adjusting
- Fits:
- Dyna 2006-2017
- Softail 2007-2017
- Touring 2007-2016
- Replaces OEM: 39929-06B