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QA1 High Performance Suspension, Driveshafts, Rod Ends & More
QA1 puts you in complete control with high performance suspension components and more for your circle track, drag racing, off-road, or street vehicle! Features like...
QA1 puts you in complete control with high performance suspension components and more for your circle track, drag racing, off-road, or street vehicle! Features like deflective disc valving, customizable compression and rebound, and lightweight aluminum construction have made QA1 shocks number one in the industry, and Summit Racing’s extensive selection makes it easy to get it all for your vehicle with the best prices anywhere! Pair them up with a set of custom-rate coil springs, heavy-duty Chromoly rod ends, and tubular chassis components for a one-of-a-kind suspension setup that you’ll only get from QA1!
QA1 puts you in complete control with high performance suspension components and more for your circle track, drag racing, off-road, or street vehicle! Features like deflective disc valving, customizable compression and rebound, and lightweight aluminum construction have made QA1 shocks number one in the industry, and Summit Racing’s extensive selection makes it easy to get it all for your vehicle with the best prices anywhere! Pair them up with a set of custom-rate coil springs, heavy-duty Chromoly rod ends, and tubular chassis components for a one-of-a-kind suspension setup that you’ll only get from QA1!
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Featured Products
QA1 Diagonal Link Kits
QA1 diagonal link kits help streamline the fabrication process of building a drag race-style 4-link. Designed to be heavy-duty to handle the demands of high-performance racing, the kits offer high-quality, MIG-weldable components to ensure a safe, easy to install, and properly engineered product. QA1's diagonal link kits pair up great with their HD Pro rear 4-link systems, but can be easily adaptable into most drag race setups. Kit contents, features, and benefits: * 1 in. diameter x 40 in. length of tubing -- Can be cut to length to work in most setups -- 40 in. or narrower frame rails * Pre-bent and drilled mounting brackets -- Make installation into 1/2 in. trailing arm bolts a breeze * Grade 8 hardware * QA1 chromoly, high-misalignment rod ends -- Standard in strength and offer generous mounting flexibility
( 1 )
$129.95
QA1 HD Pro Rear Drag 4-Link Systems
QA1 HD Pro rear drag 4-link kits are built to put down serious power! Streamlining the fabrication process, these systems deliver professional-grade results and performance in a convenient, easy-to-order kit. They are designed for the hardcore, discerning, do-it-yourself racer looking for a no-compromise solution to take their vehicle to the next level in performance and adjustability. Offered with or without QA1's MOD Series 4-way adjustable coilover shocks, or 7 in. travel, track-proven single or double adjustable coilover shocks, each kit contains high-quality, MIG-weldable components to ensure a safe and properly engineered design that can be easily adapted into many drag racing setups. A components kit is also offered without coilover shocks and lateral locating device. Find convenience, safety, and performance all in a QA1 HD Pro rear drag 4-link system. Select the kit best suited to your drag race suspension setup. Features, benefits, and contents: * Drag race-style 4-link design: -- Performance and adjustability -- Wide range of instant center tuning and on-car adjustability -- Components can be cut to length -- 40 in. or narrower frame rails * 1/4 in. thick plates * 1 1/4 in. diameter, 22 in. length trailing arm tubes * Grade 8 hardware * QA1 chromoly rod ends * 40 in. shock crossmember and mounting tabs * 40 in. diagonal link kit with mounting brackets (not in components kit)
Not Yet Reviewed
$567.95
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$2,695.95
QA1 Sway Bar End Link Kits
QA1 sway bar end link kits are manufactured with premium components to finish your suspension upgrades the right way. Worn or damaged links can cause your vehicle to handle poorly, as they are the connection between the anti-roll bar and struts or control arms. QA1 sway bar end links will restore the performance you need to minimize body leaning in turns. Order the kit recommended for your vehicle application.
( 3 )
$112.95
QA1 Pro Rear Parallel 4-Link Systems
QA1's Pro Rear Parallel 4-Link systems with panhard bar kits simplify the fabrication process for vehicles that lack aftermarket suspension support—and offer an easy solution that provides ride height adjustability and a simple installation process. These DIY kits produce professional-quality results and great looks in a convenient package. Designed for the DIY enthusiast, each kit contains high-quality, MIG-weldable components that ensure a safe and well-engineered design that'll give your favorite truck or hot rod the stance and ride quality it deserves. The systems are available in three models: * Basic, with no shocks or springs * Single-adjustable, with coilover shocks (150 lb. spring rate) * Double-adjustable, with coilover shocks (150 lb. spring rate) ADAPTABILITY: Kits include all necessary components and hardware for assembling and mounting the trailing arms, shock mounts, and panhard bar. The raw components can be cut to length and welded as needed, allowing for seamless adaptation to a wide range of applications. PACKAGING and SIMPLICITY: The parallel 4-link system, by design, packages easily into many applications, making it an ideal solution where space is limited. The parallel 4-link system is easy to tune, making it a great choice for DIY mechanics while still meeting the demands of high-end builds. Powdercoated trailing arms with forged bushing ends offer great looks, durability, and offer a smooth, compliant ride. TUNABILITY and RIDE HEIGHT ADJUSTMENT: Adjustable coilover brackets provide ride height adjustment so you can tune in the perfect stance for your ride. The included panhard bar and adjustable trailing arms ensure you can fine-tune your axle position and pinion angle for proper function and control. KIT CONTENTS: -- Powdercoated trailing arms with forged bushings and provide adjustment from 24 5/8 in. to 25 1/2 in. in length -- Trailing arm axle brackets for 3 in. axle tubes -- Panhard bar max length 37 in. -- 40 in. trailing arm crossmember -- 40 in. shock crossmember and mounting tabs -- All required hardware -- NOTE: Single- or double-adjustable models also include coilover shocks
Not Yet Reviewed
$1,154.95
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$1,980.95
QA1 Four Link Conversion Kits
Ditch those clunky leaf springs and take control of your rear suspension with QA1's coilovers and triangulated 4-link conversion kits. This upgrade improves ride quality, enhances handling performance, and enables you to dial in the perfect stance. With the added benefit of accommodating wider wheels and tires, this kit is the ideal solution for your car. QA1's 4-link conversion kits deliver handling control without compromising your daily comfort. Perfect for both street and track use, adjustable shocks are famous for their tunability, giving you exceptional handling and control and finer control over your suspension. Available with single adjustable, double adjustable, or MOD series shocks. Thoughtful design meets effortless installation requiring minimal welding. You'll experience a painless installation and setup process, where adjusting ride height, pinion angle, or wheelbase is as simple as a few tweaks – no link removal required. No modifications to floor pan required.
( 3 )
$2,383.95
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$2,597.95
QA1 Sway Bars
QA1 sway bars afford improved handling and control by reducing body roll. They're manufactured from lightweight 4130 chromoly steel and 1045 cold-formed steel—with a gloss black powdercoat finish for maximum strength, endurance, and corrosion resistance. The QA1 sway bars are precision CNC-formed, ensuring proper mounting in the stock location for a true bolt-on installation. They also feature adjustable end links to customize roll stiffness to your personal specifications. These sway bars from QA1 include greaseable graphite polyurethane bushings, along with high-quality zinc plated hardware. Engineered and road-tested to give your ride the grip that it needs to hold the road, QA1 sway bars are available for fitment on many vehicle applications. Order them individually for the front or rear—or in a complete kit.
( 141 )
$249.95
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$979.95
QA1 Level 2 Full Vehicle Handling Suspension Kits
QA1's handling suspension kits provide a full-vehicle upgrade that fits your needs. Available in three different levels of performance, you can build your car in stages, using QA1's parts list as a road map to get to the level of performance you want and have peace of mind knowing you won't have compatibility issues. Greater control and improved cornering are key benefits of QA1 Level 2 handling suspension kits. They're designed to boost performance and include a more extensive assembly of components than Level 1 kits. They offer easy bolt-on installation and full compatibility with the OEM parts you attach them to. All QA1 handling suspension kits are available with or without shocks and struts—giving you the flexibility to obtain the shocks or struts and spring rates you desire. Select the kit designed for your vehicle.
( 12 )
$3,282.95
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$9,020.95
QA1 Standard Width Ford 9 in. Rear Axle Housings
If you are already running one of QA1's 4-link suspension kits on your classic car, get ready to take your build to the next level with their custom 9 in. rear housings engineered to integrate seamlessly with your existing QA1 setup. Designed for enthusiasts looking to improve performance and durability, QA1 Standard OE width Ford 9 in. rear axle housings are perfect upgrades for handling more horsepower and aggressive driving conditions. They are designed to bolt seamlessly to your QA1 4-link system, with fully formed trailing arm brackets that minimize flex under heavy loads, enhancing strength and rigidity. Whether you're increasing horsepower or seeking a more durable rear-end solution, these custom QA1 9 in. rear housings deliver the performance gains you need. Select the kit designed for your vehicle. Features: * Fabricated center section engineered for maximum strength and durability * Formed trailing arm brackets ensure your suspension remains rigid * Heavy-duty 3 in. O.D., 1/4 in. thick wall axle tubes provide the durability needed for high-performance applications * 31-spline 1541H alloy axles support up to 650 hp, with the housing handling up to 800 hp * Standard 5 x 4 3/4 in. bolt pattern for a wide range of wheel options * Durable semi-gloss powdercoat 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
Not Yet Reviewed
$2,147.99
QA1 Bolt-On Subframe Connectors
The 1967-69 F-body was designed in an era when high performance driving and modern tire technology weren't as prevalent. Their unibody chassis, while innovative at the time, can flex and twist under stress, particularly when cornering aggressively or accelerating hard. QA1's bolt-on subframe connectors offer a simple and effective solution to this common issue. They tackle the flex issue by increasing frame rigidity, leading to a significant improvement in handling performance—especially during cornering, acceleration, and braking. The tubular design connects the front Camaro/Firebird subframe to the rear subframe, providing additional structural support and stiffness to the chassis. Additional details: * Included solid body mounts and hardware further reduce chassis flex. Their aluminum construction offers a noise-free alternative to polyurethane. * Thoughtful design: The QA1 subframe connector contours to follow the body lines for a factory-like look without sacrificing ground clearance. * Easy bolt-in installation makes the upgrade hassle-free. * Fitment notes: Does not fit convertibles.
( 2 )
$535.95
QA1 Narrowed Ford 9 in. Rear Axle Housings
If you are already running one of QA1's 4-link suspension kits on your classic car, get ready to take your build to the next level with their custom 9 in. rear housings engineered to integrate seamlessly with your existing QA1 setup. Designed for enthusiasts looking to improve performance and durability, QA1 Narrowed Ford 9 in. rear axle housings are perfect upgrades for handling more horsepower and aggressive driving conditions. They are designed to bolt seamlessly to your QA1 4-link system, with fully formed trailing arm brackets that minimize flex under heavy loads, enhancing strength and rigidity. Whether you're increasing horsepower or seeking a more durable rear-end solution, these custom QA1 9 in. rear housings deliver the performance gains you need. Select the kit designed for your vehicle. Features: * Narrowed 2 1/2 in. per side for use with mini tubs for wider wheel and tires * Fabricated center section engineered for maximum strength and durability * Formed trailing arm brackets ensure your suspension remains rigid * Heavy-duty 3 in. O.D., 1/4 in. thick wall axle tubes provide the durability needed for high-performance applications * 31-spline 1541H alloy axles support up to 650 hp, with the housing handling up to 800 hp * Standard 5 x 4 3/4 in. bolt pattern for a wide range of wheel options * Durable semi-gloss powdercoat 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
Not Yet Reviewed
$2,147.99
QA1 Level 3 Full Vehicle Handling Suspension Kits
QA1's handling suspension kits provide a full-vehicle upgrade that fits your needs. Available in three different levels of performance, you can build your car in stages, using QA1's parts list as a road map to get to the level of performance you want and have peace of mind knowing you won't have compatibility issues. Top performance is the desired goal of many automotive upgrades—precisely what QA1 Level 3 handling suspension kits deliver. Compared with the Level 1 and 2 packages, these heavy-duty assemblies offer additional control components, as well as stiffer springs to maximize your cornering ability and handling. QA1 Level 3 kits are available with or without shocks and struts—giving you the flexibility to obtain the shocks or struts and spring rates you want. Select the kit designed for your vehicle.
Not Yet Reviewed
$6,660.95
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$11,243.95
QA1 Proma Star Double Adjustable Coilover Systems
Dial in your ideal ride quality with the independently adjustable compression and rebound valving of QA1 Proma Star double adjustable coilover systems. They offer the perfect balance of street-ability and performance and are an ideal choice if you plan to use your car on the road and occasionally take it to the track. With QA1 Proma Star double adjustable coilover systems you will improve overall handling, increase suspension tunability, and gain the ability to adjust ride height quickly and easily for a perfect stance and corner balance your car, maximizing performance. They are easy to install with basic hand tools in the factory mounting locations and does not require the use of a toe link relocation kit. Coilovers are available with multiple spring rate options to help you find the perfect option for your intended use. The medium springs are great for cars that will mostly be used on the road. The firm option is geared toward track-oriented cars, further reducing body roll under hard cornering, and providing a more planted feel.
( 5 )
$1,078.95
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$1,767.95
QA1 X Series Rod Ends
QA1 X Series rod ends are an excellent choice for 4-link and ladder bar applications. They feature metal-to-metal support for heavy shock loads and increased cross-sectional thickness for greater tensile strength. The heat-treated ball is chrome plated, and the heat-treated chromoly steel body is coated for corrosion resistance. Add in a self-sealing liner and a self-lubricating liner that won't pound out, and you can see why the QA1 X Series is the choice for many racers.
( 62 )
$10.99
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$403.95
QA1 Mopar Rear Coilover Conversion Systems
Upgrade your classic Mopar A, B or E body car to a triangulated four-link design with QA1's Mopar rear coilover conversion systems. These QA1 conversion systems will transform the way your classic Mopar launches, handles, and cruises down the road! The great-looking powdercoated components improve performance and save weight—plus, you'll enjoy a much more modern driving feel and improved handling in any setting. Order QA1's Mopar rear coilover conversion system for your application. Additional features: * Proven triangulated 4-link design is popular with street/strip machines, pro-touring/road racers and autocross drivers * Available for Mopar 8 3/4 in., Ford 9 in. and Dana 60 rear axles * Improved traction during launch * Easy installation that requires minimal welding * Supports both standard and inboard spring locations * Gain greater anti-squat and pinion angle adjustability * Correct your wheelbase to fit larger wheels and tires * Has clearance for 3 in. over the axle exhaust * Single- and double-adjustable shocks eligible for limited lifetime warranty by the manufacturer * You can add the optional rear sway bar to further reduce body roll during hard launches and cornering * Made in the USA
( 2 )
$2,383.95
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$3,660.95
QA1 Endura MX Series Rod Ends
Need strength and durability for your build? QA1 Endura MX Series rod ends are the connections needed to secure your desired performance. MX heavy-duty metric rod ends are completely self-sealing and self-lubricating. They feature bodies crafted from heat-treated and coated chromoly steel with reinforced nylon/PTFE-lined, injection-molded races—and precision-ground, heat-treated, and hard chrome plated 52100 bearing steel balls. Their increased cross-sectional thickness offers greater tensile strength and metal-to-metal support for heavy shock loads. Rugged and strong, QA1 Endura MX Series rod ends are your links to a successful project.
( 8 )
$14.99
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$31.99
QA1 Level 2 Big Wheel Kits
Build your project exactly how you want with QA1 Level 2 Big Wheel kits! Get the perfect look by easily adjusting your ride height with front and rear coilovers. Raise or lower your car 2 in. the front. Raise it up to 2 in. or lower it by up to 3 in. in the rear. QA1 Level 2 Big Wheel kits allow you to dial-in the exact style you want in minutes with the included spanner wrench. These complete bolt-on suspension kits are designed to fit up to 28 in. wheels on your vehicle and include everything needed to get your Box sitting right, while giving you a better ride and improved handling. Product features and benefits: * Double-adjustable coilovers give you the ability to individually tune your shock compression and rebound to get the perfect ride and get more grip off the line for drag racing * Adjustable upper and lower trailing arms allow your wheel and tire package to fit with adjustable trailing arms that center your rear axle in the wheel well to gain more clearance for up to 28 in. wheels * Tubular control arms are much lighter and stronger than stock and will upgrade front-end geometry for better drivability—and are designed specifically for big wheel cars with corrected suspension angles for large wheels and tires * Tubular sway bars help reduce body roll and improve stability with front and rear sway bars to reduce handling issues that come from big wheels and raised ride heights * Easy, bolt-in installation * Parts come powdercoated and ready-to-install with all necessary hardware to allow you to bolt up the kit right in your garage or work with your local shop * Works with original factory rear axle housings or Quick Performance 9 in. rear axle housings
( 2 )
$5,439.95
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$5,715.95
QA1 Level 1 Full Vehicle Handling Suspension Kits
Seeking improved stance, along with ride quality and handling? Turn to QA1's handling suspension kits for a full-vehicle upgrade that fits your needs. Available in three different levels of performance, these kits offer easy, bolt-in installation (some welding may be needed) and seamlessly work with whatever OE component each piece attaches to. And with different levels, you can build your car in stages, using QA1's parts list as a road map to get to the level of performance you want and have peace of mind knowing you won't have compatibility issues. QA1 Level 1 handling kits deliver everything needed in one shot, taking the guesswork out of the process. These full-vehicle upgrades are designed to boost performance while giving you steady, reliable comfort. All QA1 handling suspension kits are offered with or without shocks and struts—giving you the flexibility to obtain the shocks or struts and spring rates you need. Select the kit designed for your vehicle.
( 1 )
$2,095.95
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$3,436.95
QA1 Rear Suspension Conversion Systems
QA1 rear suspension conversion systems provide easy, bolt-in options to replace your coil springs on factory truck arms—without any cutting, welding, or other fabricating. Each kit contains frame brackets, axle brackets, linkage assemblies, a crossmember assembly, and necessary hardware. The conversions are available with coilovers or available for use with the factory springs. Order the model designed for fitment on your specific vehicle, and enjoy the stance, handling, and suspension performance of a revolutionary QA1 system.
( 20 )
$2,887.95
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$3,101.95
QA1 Level 2 Full Vehicle Drag Racing Suspension Kits
Looking for a better launch, straight-line stability, and consistent performance? Turn to QA1's drag racing suspension kits for a full-vehicle upgrade that fits your needs. Available in three different levels of performance, these drag racing kits offer easy, bolt-in installation (some welding may be needed) and seamlessly works with whatever OE component each piece attaches to. And with different levels, you can build your car in stages, using QA1's parts list as a road map to get to the level of performance you want and have peace of mind knowing you won't have compatibility issues. QA1 Level 2 drag racing kits are ideal for owners looking for serious performance gains at the track. They deliver everything needed in one shot, taking the guesswork out of the process, so you can skip the research and focus on preparing for your next race. Select the kit designed for your drag race car.
Not Yet Reviewed
$6,398.95
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$8,620.95
QA1 Steering Rebuild Kits
QA1 steering rebuild kits are a complete, high quality solution designed to restore precise, confident steering by replacing worn linkage components with matched, long lasting parts engineered to work together as a system. Ideal for vehicles suffering from loose, wandering, or inconsistent steering, this kit eliminates guesswork by combining critical steering components into one bolt in package that restores proper geometry, alignment stability, and predictable handling feel. The kit includes all new components that are manufactured with durable materials and corrosion resistant finishes for extended service life. Designed for straightforward installation using factory mounting points, the QA1 steering rebuild kit is an excellent choice for maintenance, restorations, or performance minded upgrades where reliability, improved steering response, and long term durability are essential.
Not Yet Reviewed
$480.95
QA1 Level 3 Full Vehicle Drag Racing Suspension Kits
QA1 Level 3 Drag Racing suspension kits furnish your vehicle with the ability for a better launch, straight-line stability, and consistent performance. These kits utilize high-quality parts engineered together as a system to take the guesswork out of choosing the right pieces to support your performance goals. Many feature QA1's MOD Series front drag suspension kit or MOD Series front or front and rear Pro Coil system matched with Drag Race control arms and additional components to equip your vehicle with race-winning performance. Choose the kit designed for your vehicle.
Not Yet Reviewed
$8,572.95
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$10,850.95
QA1 Level 3 Big Wheel Kits
QA1 Level 3 Big Wheel kits are complete bolt-on suspension systems with control arms and sway bars to give your GM B-body or G-body the ideal stance, plus maximum performance with QA1 MOD Series shocks. The front and rear MOD Series adjustable Pro Coil coilovers offer maximum shock tunability with high- and low-speed valving adjustability. Perfect for the street or drag racing, MOD Series shocks are for those looking to get the most out of their car. QA1 Level 3 Big Wheel kits also include control arms, trailing arms, and sway bars for a complete bolt-on suspension system. The components are powdercoated and ready to install with the necessary hardware, making your installation hassle-free. Choose the kit designed for your vehicle. Features and benefits: * Front and rear MOD Series Pro Coil system * Pro Touring upper control arms and Street lower control arms upgrade your front-end geometry for better drivability * Control arms are designed specifically for big wheel cars with corrected suspension angles for large wheels and tires * Adjustable lower and upper trailing arms center your rear axle in the wheel well, granting more clearance for larger wheels * Front and rear sway bars reduce body roll and improve stability, and help reduce handling issues that come from big wheels and raised ride heights * Tie rod adjuster sleeves * Spanner wrench * Canister mount
Not Yet Reviewed
$7,869.95
