STX single-tube design Monotube shock with internal reservoir High-pressure nitrogen gas-charged 46 mm piston diameter Adjustable rebound damping Hose-mounted hydraulic preload adjuster Multiple spring rates available to accommodate a wide range of riders Top-level comfort, rideability, and performance Hard-anodized precision CNC-machined components Low-friction shaft and sealhead design Fully serviceable and repairable - Harley-Davidson Softail Low Rider ST FXLRST (2023, 2022, 2024)