CNC-machined alu rear shock body for XT8 big bore shock, made from premium lightweight 7075 T6 aluminum. The shock bodies have 18.5mm O.D. and are externally threaded with an adjustable collar for downstops adjustment. The large 15.3mm I.D. shock bodies ensure proper and consistent shock oil flow through the perfectly-round pistons, which move very precisely inside the smoothly-finished interior of the shock body. Set of 2.