Offers stock ride height of 13" and slams to 11.25" when parked. Wheel travel 3.50". Shock mounts under the seat, replacing the stock shock. The air compressor is pre-wired and mounts under the bike in front of swingarm. Rebound is 6-step knob adjustable.Fits as stock replacement without modifications. Hard anodized machined aluminium body. Superior riding characteristics with spherical shock bearings, Aramid Fiber adjustable air spring technology, deflective disc damping and no bottoming out under any load. Includes air compressor with On-The-Fly adjustability pressure with a 1" diameter handlebar pushbutton switch. Damping is not separately adjustable nor required in regular street use. Color coded Plug & Play wiring for quick & easy installation. Note: Will physically fit all Softail (excl. FXDRS) but is compatible with the stock ride height of Fat Bob FXFB/S and Heritage Classic FLHC/S models only. Note product length: Mentioned lengths are center to center distance between mounting eyes. Shock lengths are measured from center of mounting eye to face of shock or nut. Lengths do not include compression bumpers.