U-Bolt 4 Pack 9/16 x 2 1/2 x 8 Sq with Hardware Superlift

This Superlift kit gives you four high-strength steel leaf spring axle u-bolts in a 9/16 x 2 1/2 x 8 square configuration, plus all the nuts and washers needed for installation. Everything to complete the job ships in one box — no hunting for hardware separately.

The square bend geometry is specific to leaf spring axle applications, so the clamping load distributes correctly across the spring pack and axle pad. Steel construction handles the stress cycles that come with regular use without stretching or fatiguing the way lower-grade fasteners can.

Superlift has been engineering suspension components since 1975. This kit carries their Standard Replacement grade designation, meaning the specs are built to restore proper clamping force rather than cut corners on material or dimensions. We like that the complete hardware set is included — it removes one more variable when you're in the middle of a job.

If you have questions about whether this u-bolt size matches your application, reach out to us before ordering. Getting the dimensions right on a leaf spring u-bolt matters.