??Fitment??Fit for 1999-2024 Silverado 1500 2WD/4WD, 1999-2024 G-M-C Sierra 1500 2WD/4WD.
??Black Powder Coated??The surface of lift block is coated with black powder for stronger rust resistance, more beautiful and clean.
??Cross Gusset Plate Locked??The Cross Gusset Plate Locked design of the rear lift block, ensuring stronger support than others.
??10.9 Grades??The leaf springs U bolts is Longer than original bolts with 10.9 grades and 9/16 thread pitch, more suitable for tuner??If they are too long, you can cut them as needed.