Pro Comp U-Bolt Kit - Heavy-Duty Leaf Spring Hardware

Pro Comp U-Bolt Kits deliver a complete, heavy-duty hardware solution for securing leaf spring assemblies on trucks, SUVs, and off-road vehicles. Engineered for reliability in the most demanding applications, each kit provides all necessary components for suspension installations, lift kits, and leaf spring replacements — eliminating the need to source hardware separately.

Premium Construction:

• Manufactured from low-alloy, high-strength steel for maximum durability and long service life
• Meets Grade 5 bolt strength specifications for superior holding power and clamping force
• Precision threading ensures secure, reliable fastening and proper torque retention under load
• Engineered to meet or exceed OEM specifications for direct replacement and performance upgrade applications

Complete Hardware Solution:

• U-bolts engineered for secure leaf spring mounting and optimal axle clamping force
• Extra-thick flat washers provide proper load distribution across mounting surfaces
• Hi-nuts deliver reliable thread engagement and superior vibration resistance
• Conveniently packaged for organized storage and streamlined installation

Whether you're installing a lift kit, replacing worn suspension hardware, or building a custom off-road setup, Pro Comp U-Bolt Kits provide the strength and dependability demanded by off-road enthusiasts and professional installers alike. Multiple variants are available to suit a range of axle diameters and spring configurations — select the child listing that matches your specific application for full fitment and specification details.