Fits: 1999–2006 Chevrolet Silverado 1500 2005–2006 Chevrolet Silverado 1500 HD 2007 Chevrolet Silverado 1500 Classic 1999–2006 GMC Sierra 1500 2005–2006 GMC Sierra 1500 HD 2007 GMC Sierra 1500 Classic Belltech9530Shocks and StrutsThe 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.Belltech Street Performance shock kits provide performance handling all around. Their engineers have focused their attention on tuning the low-speed compression characteristics of these shock absorbers, which are responsible for controlling pitch and roll, to help keep you confident and in control. Their progressive rebound tuning allows you to use large aftermarket wheels and still have a smooth, firm ride. These twin-tube shocks feature oversized construction with PTFE coated bushings and piston seals to provide the lowest possible friction and long-lasting performance. So, what's the ultimate in street performance? The increased comfort and maximum comfort of Belltech Street Performance shock kits.