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SKU: 5248 | UPC: 806990064547
QA1 68-72 GM A-Body Upper Adjustable Trailing Arms
QA1 upper adjustable trailing arms fit 1968-1972 GM A-Body vehicles like Chevelle El Camino GTO Cutlass. These arms feature spherical ball rod end assemblies on the chassis end with polyurethane bushings on the differential end to remove bushing bind for smoother suspension movement. Drivers gain improved traction and handling from tires staying planted during cornering and acceleration.
Key Features
- Adjustable Design: Loosen jam nuts to set pinion angle and wheelbase without removing arms from the vehicle for quick track or street tuning
- Spherical Bearings: Chassis end uses rod ends with UHMW polyethylene to allow free suspension motion and prevent deflection under load
- Polyurethane Bushings: Fluted greasable bushings at differential end replace OE rubber for longer life and consistent performance
- Construction: Built from 1-1/4 inch diameter 0.120 wall steel tubing with zinc plating and anodizing for corrosion resistance and strength
- Sold in Pairs: Direct bolt-in replacement includes all hardware for left and right side installation on GM A-Body rear suspension
Product Notes
- Pair requires no fabrication for stock or lowered setups on 68-72 A-Body platforms
- Grease zerks on bushings every 5,000 miles or after track days to maintain smooth operation
- Ships as complete pair weighing 8.9 lbs in one box measuring 20.2 x 5.4 x 4.2 inches
Installation Notes
- Professional installation recommended.
- Bolt directly to factory locations using provided hardware no welding needed
- Adjust pinion angle to 1-3 degrees down for most rear gear setups during install
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1968-1972 | Chevrolet | Chevelle | Concours, Concours Estate, Greenbrier, Malibu, Nomad, SS, 300, 300 Deluxe, Base |
| 1968-1972 | Chevrolet | El Camino | Custom, SS |
| 1970-1972 | Chevrolet | Monte Carlo | Base |
| 1971-1972 | GMC | Sprint | Base, Custom |
| 1968-1972 | Oldsmobile | Cutlass | Base, S |
| 1968-1971 | Oldsmobile | 442 | Base |
| 1968-1972 | Oldsmobile | Vista Cruiser | Base |
| 1968-1972 | Pontiac | GTO | Base, The Judge |
| 1968-1972 | Pontiac | LeMans | Base, Luxury, Sport |
| 1969-1972 | Pontiac | Grand Prix | Base |
| 1968-1970 | Pontiac | Tempest | Base, Custom, GT, Safari |
| 1968-1972 | Buick | Skylark | Base, Custom, 350 |
| 1968-1969 | Buick | Special | Base |
Why Choose QA1?
- Over 30 years engineering rod ends spherical bearings for racing and street
- All products manufactured in 83,000 sq ft USA facility in Lakeville MN
- Focus on high-performance suspension components proven in drag circle track
Frequently Asked Questions
-
Q: Will these arms fit my 1970 Chevelle with stock rear?
A: Yes direct bolt-in for all 1968-1972 GM A-Body including Chevelle GTO Cutlass with no modifications to frame or differential -
Q: What finish is used on these trailing arms?
A: Zinc plated with anodized coating for daily driver or track durability against rust and chips -
Q: Do they require special tools for adjustment?
A: Basic wrenches loosen jam nuts turn threaded sleeve for pinion angle no removal from car needed
Shipping & Handling
- Method: Ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Single box 20.2 x 5.4 x 4.2 inches
- Weight: 8.9 lbs
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