AFCO aluminum, compression adjustable, mono-tube, with Schrader valve. 7" stroke, coil-over style using kits 20125Ar for 2 5/8" springs and 20125A-7KR for 5" springs. Schrader valve allows tuning with gas pressure. Valved on compression 3-6 and rebound 0. Has a longer rod option (D). Compressed 13.40" extended 20.35"