All new Legend AIR Suspensions Systems sets the high mark in ultimate ride quality. New redesigned exclusive Aramid Fiber air spring technology provides spring rate adjustability. Air springs maximize wheel travel and adjust to any desired ride height. Fitment accommodates 13" and 12" needs Spherical mount bearings top and bottom Hard anodized machined aluminum bodies Legend's low-friction seals eliminate stiction High flow piston reacts quickly for improved fluid flow management Deflective disc valved damping self adjust to frequency and ensures controlled performance Air compressor included, pre-wired, and model specific mounting Complete wire harness installed with three easy Deutsch connections System includes OEM looking black handlebar mounted control for easy "on-the-go" adjustability