Improves Ride Quality: Perfect for both on and off-road conditions, these shocks will improve handling and ride quality by providing you with a smooth, comfortable ride as they instantly react to changing surface conditions and ensure a consistent, fade-free ride performance. Monotube Design: These 5100 series shock absorbers feature a 46mm monotube design, patented digressive valving, durable vulcanized neoprene rubber bushings, and zinc plating for resistance against harsh elements. Built to Fit Vehicle: One size does not fit all. These Bilstein 5100 shocks are valved and tuned specifically for 2011 - 2024 Silverado / Sierra 2500 HD or 3500 HD with 4" rear lift and to consider it's many use factors including towing, tire pressure, and much more. Easy to Install: Bolt on and head out. Whether you're headed to work or hitting the trails, Bilstein's 5100 shocks are always a direct-fit installation with hardware included. Less time in the garage, and more time to enjoy your ride. Invest in Your Truck: Whether you're leveling, towing, or off-roading, these shocks will improve the handling of your vehicle and give you a much smoother ride. These Bilstein 5100 shocks come with a Limited Lifetime Warranty. The perfect shock – on or off road. With years of experience and time-tested design, the Bilstein B8 5100 shock absorbers combine the perfect amount of off-road dependability with smooth, on road driving and afability. Each shock absorber has been tested and tuned to your specific vehicle. Bilstein B8 5100 shock absorbers are designed as a direct fit solution for lifted trucks and SUV’s. These shock absorbers feature a monotube design which provides consistent fade free performance. B8 5100 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B8 5100 shock absorbers are tuned for each specific application to assure optimal performance is achieved. B8 5100 shock absorbers offer a significant improvement in ride quality, handling, and comfort. At Bilstein, they manufacture high-quality shock absorbers and suspension systems. Driving dynamics is their passion: Realizing the perfect driving behavior, building the perfect shock absorber – that is the motivation that drives Bilstein. Every day. And they have been doing so for around 70 years. Vehicle Compatibility: 2011-2024 Silverado 2500 HD, 2011-2024 Silverado 3500 HD, 2011-2024 Sierra 2500 HD, 2011-2024 Sierra 3500 HD. Notes: Fits Vehicles With 4" Rear Lift