AFCO steel body, 19 series, big body 2.02" outside diameter, take apart, rebuildable, twin-tube design, coil-over or non coil-over applications. 0 valve compression and 2 HSR valve rebound. HSR valve helps lock down right front to help steering. 7" stoke, Coil kit for 2 5/8" springs (20125AR), 5" springs (20125A-7KR).