ICON 4" Lift 2.5 Series Shocks With CDCV 01-26 GM 2500HD/3500HD LB7/LLY/LBZ/LMM/LML/L5P

Are you looking to gain more control in the rear of your truck without losing ride quality or comfort? The ICON 2.5 Rear Shock Set with CDCV is built to replace the weak, fade-prone factory rear damping on GM HD trucks with consistent, high-performance control. Whether you’re towing, hauling, or just dealing with rough pavement and washboard roads, factory rear shocks tend to overheat and lose composure fast. This setup tightens everything up, keeping the rear end stable, predictable, and planted no matter how hard the truck is working. The big advantage here is adjustability and consistency. With CDCV tuning built into the piggyback reservoir design, you can dial in compression damping to match your load or driving style, delivering noticeable improvements in both comfort and control. The result is a truck that feels more settled over bumps, less bouncy in the rear, and far more confident when weight is in the bed or on the hitch. Built around ICON’s V.S. 2.5 aluminum shock platform, the uses a monotube design paired with a piggyback reservoir to increase oil capacity and improve heat dissipation. That extra fluid volume helps reduce shock fade during long drives, heavy loads, or repeated suspension cycles, keeping damping performance consistent even under stress. The internal “bump zone” design increases damping force as the shock approaches full compression, helping control bottom-outs and maintain stability in high-speed or heavy-impact situations. Each shock is fully rebuildable and revalveable, featuring a corrosion-resistant aluminum body, a hardened chrome shaft, and heavy-duty spherical bearings for long-term durability. The CDCV (Compression Damping Control Valve) adds 10 levels of external adjustment, allowing you to fine-tune ride quality from soft and comfortable to firm and controlled depending on use.