Introduction: Height Range: 2'' Rear, 3" by removing rear factory block Shackle Kits are designed drop the rear of your Sport Truck or SUV up to 2-3 inches. Improve the appearance of the vehicle. All shackles are rubber bushings & that do not need maintenance unlike polyurethane.     Fitment: Fit For Chevy Silverado 1/2 Ton 2007-2018 Fit For GMC Sierra 1/2 Ton 2007-2018     Specification: Product Name：Shackles Kit Type：Drop Material：Steel Height Range：2-3'' Installation location：Rear Package Size：25*14*14.5cm Weight：2.78kg     Package Included: 2x Lowering Drop Shackles Kit 8x Spacers     Note: Factory block will have to be removed to achieve the 3" drop. Spacers included to reuse factory U-bolts. An alignment is always recommended after altering the height of your vehicle. You can contact us by message for an electronic instruction. Code:MGGRP Authority ID：MXR02FXSY Notice：California Prop 65 Warning