Lowering Shackles | 1.5 Inch | Chevy/GMC 1500 (99-18 & Classic) Lower the rear of you GM 1500 with Rough Country 's 1-1.5in lowering shackles! From the factory, your GM 1500 sits lower in the front than the rear. This economical and simple lowering shackle makes it easy to reduce the amount of rear height, giving you a level look from front to back for an drastically improved appearance. Installation has never been easier. Rough Country 's lowering shackles offer two mounting holes for installation allowing your truck to be lowered 1-1.5inches. These heavy duty shackles are constructed of .25 steel offering O.E. style rubber bushings to face the road ahead. Best of all Rough Country 's lowering shackles are back by Rough Country 's Lifetime Replacement Guarantee! RC0500