412 Series, 12in. Rear Shock Absorbers with Full Covers - Chrome. Fits Dyna 1991-2017. - Progressive Suspension Fuel Injection & Components Fitment Information:

Fitment Information:

Increases throttle response and eases starting

holds tighter tolerances under temperature and allows elimination of the pinion shaft bushing

Normally with Aluminum Core

412 Series, 12in. Rear Shock Absorbers with Full Covers - Chrome. Fits Dyna 1991-2017. - Progressive Suspension Fuel Injection & Components Fitment Information:Features & Benefits: * 412 Series Shock. * Best value shock on the market today. * Simple, durable design will be an improvement over the Original. * Double wall steel body construction. * Nitrogen charged, multi staged velocity sensitive valving. * Smooth, consistent damping. * Multi position cam style preload adjuster. * Progressively wound Spring. Tech Tips: * If you are purchasing longer or shorter suspension, confirm that changing your Suspension