QA1 5248 Adjustable Upper Trailing Arms 1968-72 GM A-Body Chevelle GTO

Vehicle Fitment

• 1968-1972 Chevrolet Chevelle (all trims & body styles)
• 1968-1972 Chevrolet El Camino
• 1970-1972 Chevrolet Monte Carlo
• 1971-1972 GMC Sprint
• 1968-1969 Buick Special
• 1968-1972 Buick Skylark
• 1968-1969 Buick GS 350 / GS 400
• 1970-1972 Buick GS / GS 455
• 1968-1971 Oldsmobile 442
• 1968-1972 Oldsmobile Cutlass / F85 / Vista Cruiser
• 1968-1972 Pontiac GTO
• 1968-1972 Pontiac LeMans
• 1968-1970 Pontiac Tempest

Fitment Notes

• Rear upper trailing arm pair - sold as a complete pair (left & right); installation hardware not included
• Adjustable length range: 8.825 in. to 10.460 in. - allows on-car pinion angle adjustment without removing arms from the vehicle
• Direct bolt-in installation using factory mounting locations - no cutting, drilling, or permanent chassis modifications required
• These arms replace the upper (shorter) trailing arms only; QA1 lower trailing arms are sold separately
• QA1 recommends pairing with the QA1 5213 Anti-Hop Bars for maximum traction improvement
• Made in the USA

Features

• Aluminum hex center section allows simple on-car pinion angle adjustment - just loosen the jam nuts and rotate to dial in the desired setting without removing the arms
• Spherical ball / rod end assembly on the chassis end eliminates bushing bind, allowing the rear suspension to move freely for better control and more predictable handling
• Replaces soft OE rubber differential bushings with high-quality polyurethane differential bushings for improved axle location and stability under hard acceleration
• UHMW polyethylene bushings at the chassis end reduce friction for smoother suspension travel
• Red anodized aluminum finish on the hex adjuster body provides corrosion resistance and a high-quality appearance
• High-strength construction handles the stress of drag strip launches, road course cornering, and daily driving
• Keeps tires planted firmly on the ground for improved traction and a more predictable, better-handling car

Specifications

• Position: Rear Upper (shorter arm)
• Style: Adjustable tubular
• Adjustable Length: 8.825 in. to 10.460 in.
• Arm Material: Aluminum / Steel
• Finish: Red anodized (aluminum hex) / Steel
• Chassis-End Bushing: Spherical ball / rod end with UHMW polyethylene
• Differential-End Bushing: Polyurethane
• Hardware Included: No
• Quantity: Sold as a pair
• Country of Origin: USA

Included Components

• 2x Adjustable Upper Rear Trailing Arms (left & right)
• Polyurethane Differential Bushings
• Spherical / Rod End Chassis Bushings (UHMW polyethylene)

Product Description

The QA1 5248 Adjustable Upper Rear Trailing Arms are a direct bolt-in suspension upgrade for all 1968-1972 GM A-Body vehicles - including the Chevelle, El Camino, Monte Carlo, Buick GS/Skylark/Special, Oldsmobile 442/Cutlass/F85/Vista Cruiser, Pontiac GTO/LeMans/Tempest, and GMC Sprint. The aluminum hex center section allows easy on-car pinion angle adjustment - simply loosen the jam nuts and rotate to dial in your setting without removing the arms. Spherical rod ends on the chassis mount eliminate bushing bind for smoother suspension travel, while polyurethane differential bushings replace the OE rubber for improved axle location and stability. Sold as a pair with full adjustment range of 8.825 in. to 10.460 in. Made in the USA.

Installation hardware not included. QA1 recommends pairing with the 5213 Anti-Hop Bars for maximum traction performance.