Fabtech supplies this round U-bolt kit noted as 5/8-18 x 18.00 x 3.50 (product details show 3.5 in. x 18 in. x 5/8 in.) for rear leaf spring clamping. Offered as a straightforward, cost-effective way to raise the rear ride height, the kit secures the springs to the axle and complements lift components in a complete suspension setup.
Fabtech Round U-Bolt Kit - 5/8-18 x 18.00 x 3.50