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 & OEM quality rubber bushings Ships in 1 box 2021-2024 GM Tahoe / Yukon 2WD/4WD 1-3.5" Rear Lowering Independent performance tuned 35mm compression and rebound valves Application specific (Non universal) Progressive rate Polymer bump stops Progressive rate Polymer bumpstops Ride Height adjustable 50mm shock bodies 18mm piston rods