High Performance shock absorbers with a high resistance alloy steel housing, Nitrogen filled aluminum compensator reservoirs, hydraulic damping and 12mm steel damper rods. They feature 12-step adjustable compression and adjustable spring pre-load. Adjustable spring pre-load on the DeLuxe WMT22V2 shocks feautures a hydraulic mechanism that allows easy adjustment with a common box wrench or using the optional tool. The Bitubo Piggy Back shocks for V-Rod are adjustable up to .400" (10mm) in length. Sold in pairs.