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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 1988-98 C1500 Rear Coilover Conversion Systems
QA1 1988-98 C1500 rear coilover conversion systems are a great upgrade to your C1500 suspension. Each kit comes with QA1's proven adjustable coilover shocks—so you can change the valving to meet your specific needs—along with a variety of spring rate options. These shocks allow for ride height adjustability and are 100 percent dyno-tested and serialized. The QA1 C1500 torque arm suspension with C-notch bracket is manufactured from 12-gauge HSLA steel tubing for increased strength and powdercoated for long-lasting durability. Systems come complete with adjustable instant center, panhard bar, and pinion angle to allow you to adjust the system to your exact needs. This easy bolt-on kit will add more stability and allows for optimum camber adjustment in a lowered truck. Everything needed is included, all the way down to the hardware; no welding or bed removal required.
( 3 )
$2,887.95
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$3,101.95
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 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 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
$2,695.95
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.
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$4,256.95
QA1 Rear MOD Coilover Conversion Systems
QA1 MOD Series coilover conversion systems put the ability to re-valve your shocks—on your car—into the palm of your hand. These innovative shocks feature QuickTune Technology, an industry-first that provides the ability to adapt to any track, any conditions, any time. The technology consists of interchangeable, dry modular valve pack assemblies, that can be thought of as dozens of finely tuned shocks you can hold in the palm of your hand. They define the valving curve of the shocks, and can be changed without interrupting the oil pathways. Simply unscrew from the shock, bolt-in another one with a new pre-determined valving range—and you're ready to go. There's no mess, no contamination, no air intrusion, and no downtime waiting on someone to re-valve your shocks. Ideal for Circle Track and Street/Strip applications, the shocks are available in a variety of extended and collapsed length models to best fit your vehicle. You get everything you need with these QA1 Rear MOD systems, from shocks to nuts and bolts, complete installation instructions, and even decals! Additional benefits and features of QA1 MOD Series shocks: * All new design delivers force, control, and unmatched tenability * Hard anodized aluminum bodies with PTFE—durable, non-galling surface * Double-adjustable shocks with low-speed bleed adjustments * Large solid piston (with blow-off valve)—improved driver feel and control with up to 1,600 lb. force * High-speed valving adjustment (coarse adjustment)—relates to shock operation during impact events, like hitting a pothole or curb * 24 clicks/settings—wider range of adjustment than comparable shocks * Indexable base eyelet—multiple mounting position to optimize knob access and provide more mounting flexibility * Low-speed valving (fine-tune adjustments)—adjusts ride quality and weight transfer on corner entry/exit; more bleed for softer feel and less bleed for stiffer feel * Piggyback or remote canister options * Unique spring adjuster nut and tool * Thrust bearings included * Superior thermal performance, as oil is in constant contact with outer body * One base shock can be upgraded over time to keep up with increased performance levels of your vehicle
Not Yet Reviewed
$2,172.95
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$2,366.95
QA1 Rear MOD Series HD Pro Coilover Conversion Systems
The MOD Series shocks included with QA1 rear MOD Series HD Pro coilover conversion systems are designed specifically to meet the demands of today's high-performance drag race, pro-touring, and track cars, which require higher force curves as their performance levels increase. They feature a unique, double-adjustable design with variable low-speed bleed. This allows for fully independent control over the compression and rebound characteristics, making these among the most capable shocks currently available. The key elements to this range of adjustment are the QuickTune valve packs--modular valve packs available in multiple force curves that can easily be swapped out without completely disassembling the shock, an industry first. Get low and high-speed compression with adjustable rebound when your order the QA1 rear MOD Series HD Pro coilover conversion systems best suited for your application. Product features and items include: * Impressive force curve capability and high level of precise tunability while still on the vehicle * Patented QuickTune™ valve packs in MOD Series shocks allow re-valving to be completed in minutes without interrupting the oil path and opening the shock * Valve packs also eliminate the chance of debris and air contamination that can happen during traditional re-valving * Indexable base eyelets easily unbolt and reattach for mounting flexibility to achieve the best shock and canister placement * External canister (60 psi nitrogen-charged) mounting flexibility (piggyback or remote) * MOD Series shocks are designed for the highest performing autocross, road race, track day, and drag race competition vehicles
Not Yet Reviewed
$2,116.95
