GMC Sierra 1500 HD Classic Leaf Spring Shackle Replacement

1" REAR LIFT SHACKLES FITS 1988-2018 GM 1500 & 2019 "CLASSIC" MODELS ONLY MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES

2" REAR LOWERING SHACKLES COMES WITH SELF TAPPING GREASE FITTINGS BUSHINGS DO NOT COME GREASED AND REQUIRE A SYNTHETIC OR LITHIUM GREASE MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES