Exclusive Aramid Fiber air spring technology provides spring rate adjustability Air springs maximize wheel travel and adjust to any desired ride height Fitment accommodates 12ö and 13ö needs Spherical mount bearings top and bottom Hard anodized machined aluminum bodies LegendÆs low-friction seals eliminate stiction High Flow Piston reacts quickly for improved fluid flow management Deflective Disc Valved Damping self-adjusts to frequency and ensures controlled performance Air compressor included, pre-wired and model-specific mounting NAMZ/Legend complete wire harness installed with three easy Deutsch connectors System includes OEM-looking black handlebar-mounted control for easy ôon-the-goö adjustability Optional chrome handlebar-mounted Six external knob adjustments allow the fine-tuning of rebound damping Provide optimum rebound performance for any given rider weight, personal ride-quality preference or personal riding style Light to heavy riders can fine-tune ride preference Riders with aggressive to casual styles can tune to desired quality or personal preference Made in the U.S.A. Does not fit Sportster SuperLow.. SHOCK AIR-A BLK XL