1.5-Inch Lift Blocks & U-Bolts for 2011–2019 Silverado 2500 HD

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1.5-Inch Lift Blocks & U-Bolts, fitment-checked

Rough Country 6551 adds 1.5 inches at the rear of 2011–2019 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD trucks, 4WD or RWD. The blocks are fiberglass-reinforced nylon, 3 inches wide, tapered to reduce driveshaft angle, and built around a single 5/8-inch pin. Square U-bolts measure 3 inches inside width by 12 inches inside length on a 5/8-inch thread.

A 1.5-inch block and U-bolt kit for 2011–2019 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD trucks in 4WD and RWD, covering WT, LT, LTZ, SLE, SLT, Denali, and High Country. The blocks are molded from fiberglass-reinforced nylon, 3 inches wide, tapered so driveshaft angle stays in check, and located by a single 5/8-inch pin. The square U-bolts run a 5/8-inch thread with 3 inches of inside width and 12 inches of inside length, e-coated black. Rough Country lists 2-3 hours for the install. Shipping weight: 12.0 lb.