UMI Performance 5018-B Non-Adjustable Rear Upper Control Arms 1971-1975 GM H-Body

The UMI Performance 5018-B rear upper control arms are a direct bolt-in replacement for the factory rear control arms on 1971–1975 GM H-Body vehicles. Built from lightweight tubular steel, these non-adjustable control arms are engineered to minimize wheel hop, improve traction, and deliver consistent performance on both the street and the strip.

Key Features:

• Direct bolt-in replacement for OEM rear upper control arms — no drilling required
• Constructed from 1.250" drawn over mandrel (DOM) mild steel tubing for superior strength and rigidity
• CNC machined for precise tolerances and fully TIG welded for maximum structural integrity
• Eliminates factory control arm flex to reduce bushing deflection and wheel hop
• Includes greaseable Energy Suspension polyurethane bushings for long-lasting performance and reduced deflection
• Grease fittings and zinc-plated steel sleeves included
• Durable black powder-coat finish for corrosion resistance
• Improves cornering response and rear stability for street and drag racing applications
• 100% designed and manufactured in the USA
• Easy 1-hour bolt-on installation using OEM hardware

These control arms are suitable for both daily drivers and dedicated drag racers, delivering measurable improvements in handling and traction over stock stamped steel arms. Note: The 1975 Vega Cosworth and certain other 1975 H-Body models used a panhard bar/torque arm suspension setup. If your vehicle is a 1975 model, confirm it is equipped with rear upper control arms before ordering.