Introduction: When you lowered your vehicle with shortened coil springs, the stock shocks will not be valved correctly and will sit too far down in their "stroke" to work as intended and will blow out more quickly. So you will need drop/lowering shocks. They are designed to lowered vehicled and provide ride improvement and travel required. Application: Fit for Chevy Silverado/GMC Sierra 99-06 Specification: Product type: Lowering shock Drop height: 5”-7” Material: High Tensile Strength Carbon Steel Finish: Powder coated Bushing material: Rubber Diameter of piston rod: 12.5mm/ 0.49inch Piston diameter: 30mm/ 1.18inch Outer cylinder diameter: 45mm/ 1.77inch Extended length: 465mm/ 18.31inch Collapsed length: 315mm/ 12.40inch Travel range: 150mm/ 5.91inch Nitrogen charged: Yes Dust cover equipped: Yes Feature: *High-pressure nitrogen charged twin-tube shock absorber with high durability. *Rubber bushings for better absorption. *Powder coated surface：provides superior corrosion resistance. *12.5mm Chromed Hardened Piston Rod. *30mm Diameter Sintered Iron Piston. *45mm Shock Body helps Heat dissipation. *Precision Welding. *Easy bolt-on installation *High Tensile Strength Carbon Steel for optimal durability and fitment. *Dust cover helps protect product. Package Includes: 2x rear shocks Package:51*18* 12 cm Weight: 4.4Kg Notice： California Prop 65 Warning Code: MXR02FXSY

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