B6 4600 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B6 4600 shock absorbers are tuned for each specific application to ensure optimal performance is achieved. Factory Sealed - Brand new in box. Misc Notes 1: Bilstein 4600 Series 15-17 Chevrolet Colorado 4WD Rear Monotube Shock Absorber.Bilstein 4600 Series 15-17 Chevrolet Colorado 4WD Rear Monotube Shock Absorber. KarParts360 is a national company with warehouses in 4 different states: New Jersey, California, Georgia, and Illinois. We only sell BRAND NEW items. Feel free to reach out to us if you have any issues or concerns regarding your order. All carrier-related damage or loss claims must be made with the carrier within 48 hours of item receipt. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Steering & Suspension\Shocks, Struts & Assemblies". The seller is "carlights360" and is located in this country: US. This item can be shipped to North, South, or Latin America, Japan.