Shocks features include: Height adjustability, Hardened Chrome 18mm piston rods, Triple lip NBR rod seal, Teflon guide bushing, 35mm pistons w/ low friction Teflon seals, 51mm wide body for increased oil volume and OEM quality rubber bushingsBelltech Street Performance Lowering Front Struts are designed as a performance replacement for today's Strut equipped Trucks and SUV's. In true Belltech style, the Street Performance Lowering Struts not only provide the performance and safety that you can only get from Belltech but offers the installer the choice on the amount of drop desired from one-part number. Thanks to our patented ring and perch system, you now have the ability to choose from oem stock height to as much as 3 Ride Height adjustable Independent performance tuned 35mm compression and rebound valves 18mm piston rods 50mm shock bodies Progressive rate Polymer bumpstops Application specific (Non universal) Application Summary: Year Make/Model 2014-2020 Cadillac Escalade 2014-2020 Cadillac Escalade ESV 2007-2013 Chevrolet Avalanche 2007-2018 Chevrolet Silverado 1500 2015-2020 Chevrolet Suburban 2007-2014 Chevrolet Suburban 1500 2007-2020 Chevrolet Tahoe 2007-2018 GMC Sierra 1500 2007-2020 GMC Yukon 2015-2020 GMC Yukon XL