- Jegs
- Steering & Suspension
- Control Arms & Trailing Arms
- QA1 Mustang Street Performance and Racing Suspension Components
QA1 Street Tubular Control Arms 1979-1993 Mustang 5.0L
122-MU1ESA

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Street Control Arms
Street control arms are built with poly bushing and engineered for performance. They feature a factory replacement ball joint and polyurethane pivot bushings, these control arms work great on vehicles used primarily for cruising and long distance events.
Specifications:
These QA1 suspension parts for Mustangs are some of the most advanced ever designed. Reducing the weight is one of the keys to go fast, moving weight from your Mustang is the best place to start. By design, Mustangs are nose heavy which causes issues with cornering and acceleration. QA1 offers a strong, well engineered and reasonably priced solution to cutting the weight on your Mustang to make it accelerate faster, and handle better.
Tubular K-Members
Designed to reduce weight (up to 28 pounds), increase strength, improve geometry, and bolt-in replacement, QA1's Tubular K-Members' mounting points have been digitally indexed from new factory pieces. Other highlights include a greater header and oil pan clearances for easier installation and maintenance; improved bump steer, anti-dive, interchangeable motor mounts for Ford or Chevy engines and Ackerman angles for maximum performance; black powder-coated for durability; and the use of stock or aftermarket A-arms.
Engine Mounts and Cross Members
Featuring a High Strength Steel Construction and Powder Coated Finish for great durability and corrosion resistance, they are interchangeable depending on your applications needs. Cross Members include a long-lasting polyurethane transmission mount for superior performance.
Street Tubular Control Arms
Street Tubular Control Arms are a perfect choice for street and strip use. They are built with QA1's exclusive compressed rubber bushings and engineered for performance.
Race Tubular Control Arms
These control arms use QA1's exclusive heat-treated Chromoly, PTFE/Kevlar-lined, XM Rod ends. Spacers are included to allow forward and backward arm movement for wheelbase adjustment.
Features:
- Header and oil pan clearance maximized for easier maintenance and installation
- Bolt-in engine mounts that can be easily swapped out for future engine changes
- QA1 K-Members are 50% lighter than the stock K-member
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.