CALIPER BRACKET GM-3r

The U-B Machine Caliper Bracket GM-3r (Part Number 12-0401) is a weld-on rear brake caliper bracket engineered for large GM caliper applications on vehicles running 3-inch OD axle tubes. Manufactured from steel in natural finish, this bracket delivers the structural rigidity and precision fit required for custom brake system fabrication and suspension work. Whether you're building a custom hot rod, resto-mod, or performance vehicle, this bracket provides the foundation for reliable brake mounting.

The bracket's weld-on design allows full integration into custom axle housing configurations, eliminating reliance on OEM mounting points and enabling builders to position brake calipers for optimal clearance and brake line routing. At 0.96 lbs and measuring 8.4 x 1.2 x 8.8 inches, it's compact enough for tight rear-axle installations while maintaining sufficient material thickness for durability under repeated braking loads. Steel construction in natural finish provides a blank canvas for powder coating, welding prep, or protective finishing to match your project specifications.

This bracket is specified for large GM calipers, a common choice among fabricators working with vintage Chevrolet, Pontiac, and other GM platforms. The 3-inch OD axle tube designation is critical—verify your axle housing matches this spec before purchase. Each bracket is sold as a single unit, allowing builders to purchase pairs as needed for complete rear-brake systems.

Sourced through TacticalSurplusUSA, U-B Machine components are trusted by fabricators, restoration specialists, and custom builders who demand precision fitment and authentic OEM-compatible dimensions. This brake bracket integrates seamlessly into suspension kits, custom axle builds, and high-performance drivetrain projects where brake system reliability is non-negotiable.