King Shocks 2.5 Performance Ext Coilovers w/ Remote Reservoir Front Pair for 2011-2022 Chevrolet Silverado 2500 HD 4WD w/3-4" liftKing 2. 5 Performance Coilovers w Remote Reservoir are carefully designed to provide the highest level of performance damping and suspension control for your vehicle. These are the primary suspension members used to carry your vehicle's weight and maintain ride height while you tackle unpredictable and varying terrain characteristics. With King Shocks, they know the devil is in the details, and the manufacturing process adheres to strict machining