Metric Upper Trailing Arm Mount

The PEM Metric Upper Trailing Arm Mount (HMBUSET) is a heavy-duty weld-on bracket engineered for General Motors metric-platform vehicles requiring reliable rear suspension geometry control. This upper trailing arm mount delivers the structural integrity and precise fitment that fabricators, suspension builders, and off-road enthusiasts demand when executing custom chassis work, frame modifications, or performance suspension upgrades on GM Metric platforms.

Manufactured from steel in natural (uncoated) finish, this pair of mounts weighs 3.4 lbs total and measures 6.4 x 6 x 9.55 inches, providing a compact footprint while maintaining the material thickness and cross-section necessary for load-bearing suspension duty. The weld-on design allows full integration into custom frame rails and subframes, eliminating bolt-hole alignment issues and enabling builders to position the mount precisely according to their specific chassis geometry and anti-squat requirements. Natural steel finish allows direct welding preparation and accepts paint or protective coating matched to the builder's specification.

This product serves fabricators, suspension shops, street-rod builders, and off-road vehicle platforms where GM Metric trailing arm geometry must be retained or adapted into custom frames. The pair format accommodates the typical left-and-right suspension requirements of a complete rear axle assembly, simplifying procurement for full vehicle builds or comprehensive rear-end upgrades.

PEM's trailing arm mount hardware is recognized in the custom chassis and suspension industry for dimensional accuracy and material consistency, critical factors when aligning factory or custom suspension geometry to OE or custom-spec anti-squat angles. Proper trailing arm mounting geometry directly affects axle housing stability, driveline stress distribution, and vehicle handling under acceleration and braking—making accurate fabrication brackets essential to suspension performance and longevity.

Sourced direct through TacticalSurplusUSA, this weld-on bracket is ideal for fabricators planning comprehensive suspension and frame modifications on GM Metric platforms where reliable, dimensionally correct hardware is non-negotiable.