BRAND NEWPART# HD763Fits 91-17 Dyna modelsThe Öhlins STX36 Twin American V-Twin shock absorbers are designed to enhance performance and comfort on the road. From cruisers to café racers, these twin shocks are suitable for a variety of models. We offer emulsion, piggyback, hose, and inline versions of the shock, all tailor-made and tested to suit your bike.This version of the STX36 Blackline Twin shocks for the Harley-Davidson Dyna FXD / FXDWG (1991–2017) boasts our proven monotube design and high-pressure nitrogen gas-charged system, with an external piggyback reservoir for consistent damping performance under extreme conditions.With adjustable compression and rebound damping, you can tailor the behavior of the shock to suit your riding preferences. Spring preload can be adjusted with the included billet preload tool to compensate for changes in weight to ensure proper steering geometry. The shock is also length-adjustable, allowing you to raise or lower your ride height without compromising suspension travel.We offer multiple spring rates for the STX36 Blackline shocks, giving you more tuning options to help you achieve the perfect setup on your Dyna.FeaturesAdjustable rebound and compression dampingMonotube shock with piggyback reservoirAdjustable lengthHigh-pressure nitrogen gas-chargedSTX single-tube design36-mm piston diameterAdjustable preload with billet toolMultiple spring rates available to accommodate a wide range of ridersTop-level comfort, rideability, and performanceHard-anodized precision CNC-machined componentsLow-friction shaft and seal head designFully serviceable and repairable