QA1’s one-click solution gives you everything you need to get your ’70-’81 Camaro or Firebird project on the road—fast. We’ve paired our 4-Link Suspension Kit with a custom QA1 Narrowed 9" rear housing for enthusiasts seeking top-tier performance and hassle-free installation. Your time is valuable, so say goodbye to hunting for junkyard rear ends or struggling with endless measurements and mismatched components. Every piece in this package is tested by QA1 to fit the first time. This kit delivers the performance, ride quality, and adjustability you need to handle serious power and aggressive driving— without the frustration of piecing things together.
ELIMNATE YOUR LEAF SPRINGS
Ditch your leaf springs for QA1 coilovers, triangulated 4-link suspension and an all-new, narrowed 9" rear end. QA1 4-link kits were fully engineered to provide ride height, ride quality and instant center adjustability. Whether you're after a lowered, aggressive look or need clearance for wider wheels and tires, QA1 systems deliver.
EASY INSTALLATION
QA1 is committed to delivering products that make upgrading your car as simple as possible. Our 4-Link kits with 9’’ housing is designed for a bolt-on installation, eliminating the need for custom fabrication.
PERFORMANCE 9” HOUSING
Key Features:
- Narrowed Housing to accommodate wide wheel and tire packages in mini tubbed cars
- Fabricated Center Section engineered for maximum strength and durability.
- Formed Trailing Arm Brackets reduce flex under high loads, ensuring your suspension remains rigid.
- Heavy-Duty 3” OD, ¼” Wall Axle Tubes provide the durability needed for high-performance applications.
- 31-Spline 1541H Alloy Axles support up to 650HP, with the housing handling up to 800HP.
- Durable Semi-Gloss Powder coat Finish offers long-lasting protection and a clean, sleek look.
- Drain Plug, Fill Plug, and Jack Pad come standard to make service a breeze.
- Includes T-bolts and Housing Studs for assembling axle shafts and installing third members
- High-quality Roller Bearings for smooth operation and long-lasting reliability
Helpful Specifications:
- 56-1/8” narrowed wheel mounting surface width. Narrowed 2-1/2” per side for use with mini tubs for wider wheel and tires
- Big Ford “New Style Torino Flanges” with 2.5” axle offset for easy brake compatibility
- 5x4-3/4” factory bolt pattern, standard fitment and a wide range of wheel options
- ½” x 3” wheel studs for better fit with alloy wheels
- 770” hub diameter
- Requires third member for Ford 9” housings with 31 spline axles
BEST IN-CLASS WARRANTY
QA1 shocks are eligible for a Limited Lifetime Warranty. For peace of mind, simply register your shocks at QA1.net/Warranty to ensure coverage for as long as you own your vehicle. The 4-link and 9” components come with a 1-year warranty against manufacturer defects.
MADE IN THE USA
QA1 4-link kits & 9” is proudly made in the USA.
FEATURES AND BENEFITS
- Complete Kit: Includes QA1’s 9" rear housing and triangulated 4-link, designed for a perfect fit
- Easy Serviceability: Convenient access with a dedicated fill port, drain plug, vent port, and jack plate for easy rear-end maintenance.
- Adjustable Coilovers: Fine-tune your ride height and handling for a perfect stance and performance.
- Easy Installation: Bolt-in design with minimal welding required, reducing install time and effort.
FITMENT NOTES
- Verify wheel and tire fitment on vehicle prior to installation.
- Center section (3rd member) not included
- Narrowed housing recommended to be used with custom offset wheels and mini tubs
- Welding required.
- QA1 Subframe Connectors strongly recommended.
- May require exhaust modification.
Specifications
- Stock or Narrowed WidthNarrowed Width
- Shock ValvingDouble Adjustable
- Spring Rate170lb/in.
