AFCO steel body, 19 series, big body 2.02" outside diameter, take apart, rebuildable, revalvable, twin-tube design, coil-over or non coil-over applications. 4 valve compression and 4 valve rebound. 9" stoke, special valve . Coil kit for 2 5/8" springs (20125AR), 5" springs (20125A-7KR) bearing ends, compressed length 14.85", extended length 23.76".