SKU: R157-170 | UPC: 806990175564
QA1 70-81 GM F-Body Rear Four Link Suspension System
Replace factory leaf springs on 1970-1981 Chevrolet Camaro and Pontiac Firebird with QA1’s triangulated four-link kit and Proma Star coilovers. This system delivers precise handling control better ride quality and adjustable ride height for improved traction and stance. Clear space for wider wheels and tires up to 335 section width with mini-tubs for maximum performance.
Key Features
- Lowered Aggressive Stance: Optimized tubular four-link design sets ride height from 10.75-12 inches axle centerline to fender arch on Camaros or 13.75-15 inches on Firebirds with easy coilover adjustments.
- Wider Wheel Tire Fitment: Accommodates up to 12-inch wide wheels and 335 tires with standard or mini-tub setups for enhanced traction and road presence.
- Improved Handling Stability: Triangulated four-link geometry controls roll center pinion angle and wheelbase while single-adjustable Proma Star shocks tune damping for street or track.
- Adjustable Ride Quality: Proma Star coilovers provide rebound damping adjustment and height tuning via threaded springs without disassembly.
- Effortless Setup: Adjustable links allow pinion angle and wheelbase tweaks post-install with included spanner wrench for precise alignment.
Product Notes
- Exhaust modification required does not fit over-axle exhaust systems.
- Wheel and tire fitment must be verified on vehicle maximum widths need mini-tubs.
- QA1 subframe connectors strongly recommended for chassis rigidity freight shipping due to size and weight.
Installation Notes
- Professional installation recommended.
- Minimal welding required for upper and lower link mounts.
- Compatible with factory rearend housing includes all necessary hardware and brackets.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1970-1981 | Chevrolet | Camaro | All |
| 1970-1981 | Pontiac | Firebird | All |
Why Choose QA1?
- Motorsports-proven suspension components trusted in drag road racing.
- Precision CNC-machined and TIG-welded tubular construction.
- American-made with direct bolt-in design for F-Body platforms.
Frequently Asked Questions
- Q: What ride height range does this kit provide?
A: Camaro models achieve 10.75 to 12 inches from axle centerline to fender arch Firebird models 13.75 to 15 inches adjustable via coilover preload. - Q: What materials are used in construction?
A: CAD-designed 1.5-inch and 1.25-inch OD 0.120-wall DOM steel tubing with chromoly heim joints and polyurethane bushings. - Q: What warranty coverage applies?
A: QA1 offers limited lifetime warranty on suspension components and two-year warranty on Proma Star shocks against manufacturing defects.
Shipping & Handling
- Method: Freight truck shipping
- Availability: In stock – ships same or next business day
- Packaging: One large box dimensions 48 x 12 x 12 inches
- Weight: 85 lbs
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