QA1 Upper Adjustable Trailing Arms for Select 1979-2004 Ford Mustang & Mercury Capri

Fits select 1979-2004 Ford Mustang and 1979-1986 Mercury Capri.

Upgrade your rear suspension geometry with QA1 Heavy-Duty Adjustable Trailing Arms (MPN 5255), specifically engineered to improve traction and eliminate the binding common in factory setups. These upper arms provide the adjustability needed to set your wheelbase and pinion angle for optimum performance without removing the arms from the vehicle.

To ensure smooth suspension travel and predictable handling, these arms replace soft, compliant OE bushings with high-durometer polyurethane bushings on the differential side. The chassis end utilizes a spherical ball or rod end assembly with UHMW polyethylene bushings, which allows the rear suspension to move more freely throughout its arc. This combination keeps your tires planted and significantly reduces wheel hop during hard acceleration.

• Adjustability: On-car adjustment of pinion angle and wheelbase via jam nuts
• Construction: Heavy-duty steel components with a durable gloss black powder-coated finish
• Chassis Mount: Spherical rod end with UHMW polyethylene bushings to eliminate bind
• Differential Mount: Fluted, greasable polyurethane bushings for improved response
• Installation: Direct bolt-in design requires no specialized tools for mounting
• Origin: Proudly made in the USA
• Manufacturer Part Number: 5255