QA1 5254 Heavy-Duty Upper Adjustable Trailing Arms for 1978-1996 GM B-Body (Caprice/Impala SS/Roadmaster)

Fits 1978-1996 GM B-Body models, including select Chevrolet Caprice and Impala SS, Buick Roadmaster and LeSabre, Oldsmobile Delta 88, and Pontiac Bonneville.

QA1 Heavy-Duty Adjustable Trailing Arms are designed to provide 1978-1996 GM B-Body owners with precise rear suspension tuning and improved power delivery. These arms allow for easy wheelbase and pinion angle adjustments without removing the hardware from the vehicle—simply loosen the jam nuts and rotate the assembly to your desired setting. By replacing soft OE rubber with high-performance components, these arms eliminate the suspension bind and flex that lead to wheel hop and unpredictable handling.

Built for maximum durability, these arms are constructed from 1.25-inch diameter, 0.120-inch wall steel tubing and finished in a gloss black powder coat for long-lasting corrosion resistance. The design features a hybrid bushing configuration: the differential end uses fluted, greasable polyurethane bushings, while the chassis end utilizes a spherical ball or rod end assembly with UHMW polyethylene bushings. This combination allows the rear suspension to pivot freely through its travel, keeping tires planted for superior traction and more predictable cornering.

• Manufacturer Part Number: 5254
• Adjustable design allows for on-car pinion angle and wheelbase tuning
• Constructed from high-strength 1.25" x 0.120" wall steel tubing
• Eliminates bushing bind for smoother suspension movement and improved traction
• Includes greasable polyurethane bushings and spherical rod ends
• Durable gloss black powder-coated finish
• Straightforward bolt-in installation
• Proudly Made in the USA