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Automatic Primary Chain Tension Adjuster




New product

39990-01, 40063-05A

Original Equipment on '06-later Dyna® and '07-later Softail® and Touring models, this Automatic Primary Chain Adjuster eliminates the need to manually adjust the primary chain tension at traditional service intervals.

  • Requires separate purchase of model-specific primary gasket and seals

More details

Available to backorder


$ 124.08

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Product Information

IN THE BOXChain tensioner and all necessary installation hardware
WARRANTY1 year limited warranty - See Customer Service section for details

More info

  • These Screamin' Eagle® products are 50-state street-legal for sale and use on all vehicles, including those that are pollution controlled. Complies with the requirements of 40 CFR Part 86, subparts E and F.

Bike Fitment

Fits '08-'09 FXDF, '10-later Dyna® (except FXDLS) and '07-later Softail® (except FLSS, FLSTFBS, FXCW, FXCWC, FXSB and FXSE) and '07- '16 Touring models. Does not fit models equipped with hydraulic clutch actuation.

Select fitment by year