Bilstein 4600 Series Shock Absorbers For Chevy Silverado/GMC Sierra 2500/3500 HD 2 Wheel Drive 2011-14 - Includes Front and Rear 4600 Series Shocks Includes front and rear 4600 Series Bilstein Shock Absorbers. Fits stock height 2011-2014 Chevy Silverado & GMC Sierra 2500/3500 HD 2 wheel drive. Monotube gas pressure technology provides improved control and stability, precise handling, ultimate performance, and incredible comfort. Easy to install; direct bolt-on; no modification required. Lifetime Warranty