"Belltech Trail Performance shocks & struts have been engineered to provide you with a premium ride in your late model truck or SUV. Their engineers primarily focused their attention on getting the tuning of the low speed compression characteristics of these shock absorbers just right. Low speed compression is largely responsible for keeping your vehicle’s body roll, dive, & squatting under control to help maintain your confidence and vehicle control. Belltech also designed the ""progressive"" rebound tuning so that you'll get a shock that perfectly complements large aggressive off-road wheels & tires, keeping the ride smooth but keeping you firmly in control. Trail Performance shocks & struts are install easily in your factory mounting locations and offer some features like metal dust boots, hardened chrome piston rods with low friction Teflon seals, triple lip NBR rod seal, Teflon guide bushing, a wide body for increased oil volume and OEM quality rubber bushings. | Belltech Trail Performance Shock TP10013B"