AFCO steel, rebound adjustable, mono-tube, with Schrader valve. 9" 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 5 and rebound 2-4. Compressed 15.30" extended 23.21"