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Purpose-Built Control for Drag Racing Launches
The QA1 52919 drag race front lower control arm kit is designed for 1967-1969 GM F-Body and 1968-1974 GM X-Body applications. Its low-friction components support bind-free suspension movement during launch, helping promote consistent front-end rise and weight transfer when used with a compatible coil-over suspension.
Key Features
- Designed for 52919 vehicle-specific front lower control arm applications
- Integrated QA1 Ultimate low-friction ball joints
- Composite pivot bushings for smooth suspension movement
- Adjustable steering-stop bolt on each control arm
- Billet aluminum cross shafts help reduce front-end weight
- High-strength tubing provides durability for street and drag-racing use
- Configured for QA1 Pro Coil Systems with double-shear lower mounting
- Robotically welded and powder coated
Fitment
The 52919 kit is vehicle-specific and is listed for the following applications. A compatible coil-over suspension is required.
| Years | Make | Model | Application | Restrictions |
|---|---|---|---|---|
| 1967-1969 | Chevrolet | Camaro | Front lower control arm kit | Requires coil-over suspension. Factory-style coil springs are not compatible. Install the included spherical bearing mounts. |
| 1967-1969 | Pontiac | Firebird | Front lower control arm kit | Requires coil-over suspension. Factory-style coil springs are not compatible. Install the included spherical bearing mounts. |
| 1968-1974 | GM | X-Body | Front lower control arm kit | Requires coil-over suspension. Factory-style coil springs are not compatible. Install the included spherical bearing mounts. |
Specifications
| Detail | Value |
|---|---|
| Product | QA1 52919 drag race front lower control arm kit |
| Control arm position | Front lower |
| Suspension use | Drag racing with compatible coil-over suspension |
| Ball joints | Integrated QA1 Ultimate low-friction ball joints |
| Pivot bushings | Composite |
| Cross shafts | Billet aluminum |
| Mounting configuration | QA1 Pro Coil Systems with double-shear lower mounting |
| Construction | High-strength tubing with robotic welding |
| Finish | Powder coated |
| Control-arm mounting torque | 80 lb-ft at ride height |
| Lower shock bolt torque | 50 lb-ft for the lower 1/2-inch shock bolt |
| Lower ball-joint torque | 65 lb-ft. Tighten only as needed to align the cotter-pin hole |
| Steering-stop bolt torque | 31 lb-ft |
| Ball-joint preload | 25-30 in-lb, then back off 90 degrees |
| Ball-joint lock-nut torque | 25 lb-ft |
| Ball-joint lubricant | NLGI #2 GC-LB lithium-based grease |
| Maintenance interval | Check and set ball-joint preload at least annually or every 3,000 miles, whichever comes first |
What's Included
- Spherical bearing mounts
- Spherical bearing kit
- Supplied bump stop for 1967-1969 Camaro and Firebird applications
- 3/8-inch washers for steering-stop adjustment
About QA1
QA1 develops suspension components for street performance, drag racing, autocross, and track use. The QA1 52919 kit combines lightweight materials, low-friction joints, adjustable control, and durable fabrication for compatible GM applications.
FAQ
What is the 52919?It is a vehicle-specific drag race front lower control arm kit for 1967-1969 GM F-Body and 1968-1974 GM X-Body applications.
What suspension is required?The kit requires a compatible coil-over suspension and will not work with a factory-style coil spring.
Does the kit include ball-joint components?Yes. It includes integrated low-friction ball joints along with spherical bearing mounts and a spherical bearing kit.
What type of mounting is supported?The control arms are configured for QA1 Pro Coil Systems with double-shear lower mounting.
Can the front-end rise be adjusted?Each control arm has an adjustable steering-stop bolt that can be set with the supplied 3/8-inch washers.
Where does the supplied bump stop go?On 1967-1969 Camaro and Firebird applications, install the supplied bump stop in the factory bump-stop location on either the front or rear of the control arm.
What alignment settings are recommended?When both QA1 upper and lower control arms are installed, the guidance for 1967-1974 F-Body and X-Body applications is 0.5 degrees plus or minus 0.5 degrees negative camber, 3-5 degrees positive caster, plus or minus 0.5 degrees cross-caster, and 0.1-0.3 degrees toe-in.
How often should ball-joint preload be checked?Check and set ball-joint preload at least annually or every 3,000 miles, whichever comes first.
Installation Instructions
- Confirm that the vehicle has a compatible coil-over suspension. Do not use the control arms with factory-style coil springs.
- Raise and support the vehicle securely with a floor jack and jack stands. Follow appropriate spring and suspension safety procedures.
- Remove the original front lower control arms and related hardware as required for the application.
- Install the included spherical bearing mounts as required by QA1 control arm installation.
- For 1967-1969 Camaro and Firebird applications, install the supplied bump stop in the factory bump-stop location on either the front or rear of the control arm.
- Install the control arms and loosely fit the control-arm mounting hardware.
- Install the lower shock hardware and torque the lower 1/2-inch shock bolt to 50 lb-ft.
- Torque the control-arm mounting bolts to 80 lb-ft after the vehicle is at ride height.
- Torque the lower ball joint to 65 lb-ft. Continue tightening only as needed to align the cotter-pin hole. Never loosen the nut to align the hole.
- Set the ball-joint torque-nut preload to 25-30 in-lb, then back it off 90 degrees.
- Torque the ball-joint lock nut to 25 lb-ft.
- Adjust the steering-stop bolt using the supplied 3/8-inch washers and torque the bolt to 31 lb-ft.
- Grease the ball joint with high-quality NLGI #2 GC-LB lithium-based grease.
- Verify that the ball stud has no axial lash and confirm that all fasteners are properly secured.
- Perform a professional alignment before driving. For drag racing, maximize positive caster while using toe-in as needed for straight-line stability.
- Check and set ball-joint preload at least annually or every 3,000 miles, whichever comes first.
QA1
QA1 suspension parts are stocked at Black Ops Auto Works for American muscle cars and classic trucks. Shop coilover kits, shock absorbers, springs, handling kits, four link systems, sway bars, strut kits, rod ends, and suspension hardware for the Mustang, Camaro, Corvette, Challenger, Charger, and GM B-Body, F-Body, and G-Body platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 536 QA1 SKUs across coilovers, shocks, springs, and handling kit categories. What This Brand Covers QA1 is a suspension manufacturer known for adjustable coilover systems, shock absorbers, and complete handling kits built for muscle cars, classic trucks, drag cars, and pro touring builds. The lineup covers everything from single component shock replacement to full vehicle handling packages. Brand Focus QA1 concentrates on American muscle car and classic truck platforms, with deep coverage of GM, Ford, and ...
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