Adj. Upper Trailing Arms - 79-04 Ford Mustang

The Adjustable Upper Trailing Arm for 1979–2004 Ford Mustang is a tubular rear suspension component engineered to restore handling precision and compliance in classic Mustang platforms. Designed as a matched pair, these arms feature greasable polyurethane bushings and red anodized aluminum construction, delivering adjustability for suspension geometry tuning while maintaining factory mounting points and clearances. This is the suspension upgrade chosen by Mustang enthusiasts and restoration shops prioritizing predictable, tunable rear-end behavior without requiring full frame modifications.

Each arm measures 20.2 inches in length with a 5.3 x 4.1 inch cross-section, providing proper geometry for the Mustang's independent rear suspension design. The tubular construction minimizes unsprung weight compared to solid bar alternatives, improving compliance during cornering and reducing tire deflection. Polyurethane bushings offer superior durability to OEM rubber while remaining serviceable through the greasable design—a practical advantage for long-term ownership. Red anodized finish resists corrosion in salt-air environments and provides visual distinction during restoration documentation. Adjustability allows fine-tuning of suspension angles to compensate for chassis modifications, lowering kits, or alignment corrections.

This trailing arm pair is essential for Mustang owners performing suspension refreshes, chassis upgrades, or resto-mod builds where OEM arms no longer provide adequate performance or adjustability. Whether addressing worn factory geometry on high-mileage platforms or establishing baseline suspension tuning on restorations, these arms deliver measurable improvements in steering response, bump compliance, and repeatable handling characteristics. Shipped as a complete pair ready for installation.

Ford Mustang rear suspension systems benefit significantly from component upgrades that address compliance and geometry without compromising authenticity or interfering with other chassis systems. Upper trailing arms are critical load paths in the independent rear setup; upgrading to tunable, serviceable units like these eliminates a common wear point and opens suspension optimization possibilities that factory arms cannot accommodate.