QA1 5255 Adjustable Upper Trailing Arms 79-04 Mustang

QA1 Precision Products 5255 adjustable upper trailing arms are engineered for serious performance on 1979-2004 Mustangs and 1979-86 Capris. These heavy-duty arms allow easy rear suspension adjustments for optimum handling and traction without removing the arms from the vehicle.

Key Features:

• Constructed from .120" wall cold rolled steel tubing for maximum strength and flex elimination
• On-car adjustability—simply loosen jam nuts to adjust pinion angle for improved traction
• Spherical ball assembly with Delrin bushings allows rear suspension to move more freely
• Fluted, greasable graphite/polyurethane bushings replace soft OE rubber bushings
• Box-style design provides superior rigidity over stock trailing arms
• Sold in pairs for complete upper trailing arm replacement

These adjustable upper trailing arms are ideal for drag racing, road racing, or street performance applications where precise rear suspension geometry is critical. The ability to adjust pinion angle on the car makes tuning quick and convenient, while the upgraded bushings and robust construction eliminate the flex and binding common with factory rubber-bushed arms.