The Belltech Street Performance lowering shock sets have been engineered to provide a premium ride quality for today's trucks and SUV's. Our engineers focused their attention on tuning the low speed compression characteristics of this shock absorber, which is responsible for controlling your Sport Truck or SUV's pitch and roll, dive and squat to help keep you confident and in control. The "Progressive"rebound tuning will complement large aftermarket wheels, keeping the ride smooth but firm and in control. Shocks features include: Metal dust boots, Hardened Chrome 15mm piston rods, Triple lip NBR rod seal, Teflon guide bushing, 35mm pistons w/ low friction Teflon seals, 51mm wide body for increased oil volume & OEM quality rubber bushings. Ships in 1 box Street Performance Premium Replacement Twin Tube Gas Charged Shock Absorber Set for Lowered Truck and SUV, Set Includes 2 Front and 2 Rear Performance Tuned Shock Absorbers - See Application Gude For Fitment