Fits select 1999-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 2WD models.

Improve the cornering stability and handling response of your NBS (New Body Style) truck with the QA1 1.5-inch diameter front sway bar. This heavy-duty upgrade is engineered to minimize body roll by increasing front-end stiffness, keeping the chassis flatter through turns and more composed during daily driving. Precision-formed for a consistent fit, the bar features a durable powder-coated finish for long-term protection against the elements.

Note: This sway bar is designed for use exclusively with QA1 tubular lower control arms. It will not fit OEM or other aftermarket lower control arms and is not compatible with vehicles equipped with factory torsion bar front suspensions.

• 1.5-inch diameter maximizes roll resistance and front-end stability
• Includes polyurethane bushings, brackets, and all necessary installation hardware
• Direct bolt-on installation requires only basic hand tools; no cutting or welding needed
• Durable powder-coated finish for superior corrosion resistance
• Complements QA1 coil-over systems and tubular control arms
• Proudly made in the USA (Lakeville, MN)
• Manufacturer Part Number: 52869

This Part Fits:

Fits 1965-1972 Ford F-100 Base models.

Improve the cornering performance and chassis stability of your truck with the QA1 52866 rear sway bar. Precision CNC formed for an exact fit, this bar is engineered to reduce body roll and provide more predictable handling during aggressive driving. Unlike heavy solid bars, this 1-1/4" unit is manufactured from lightweight hollow 4130 chromoly steel, offering high torsional stiffness without excessive weight.

• Construction: Precision CNC formed 1-1/4" hollow 4130 chromoly steel for maximum strength and durability.
• Finish: Durable black powder coat finish protects against corrosion and road debris.
• Bushings: Includes greasable polyurethane bushings for reduced deflection compared to factory rubber.
• Installation: Bolt-on design utilizing high-quality plated hardware for a straightforward upgrade.
• Origin: Proudly made in the USA.

Fits 1965-1979 Ford F-100 and F-150 trucks across all trim levels including Base, Custom, Northland, Ranger, and XLT.

The QA1 Front Sway Bar (MPN 52865) is engineered to deliver modern cornering stability and improved steering response to classic Ford F-Series trucks. Precision CNC-formed for a direct bolt-on installation, this sway bar significantly reduces body roll during cornering and lane changes. Unlike heavy solid bars, this unit is manufactured from 1-3/8 inch hollow 4130 chromoly steel, offering the high torsional stiffness required for performance handling without adding unnecessary front-end weight.

• Hollow Chromoly Construction: 1-3/8 inch 4130 chromoly provides maximum strength-to-weight ratio.
• Polyurethane Bushings: Includes greasable bushings to ensure smooth, quiet operation and eliminate the deflection common with aged rubber.
• Bolt-On Fitment: Designed to mount to factory locations for a straightforward installation.
• Durable Finish: Protected by a high-gloss black powder coat for long-term corrosion resistance.

• Manufacturer Part Number: 52865
• Diameter: 1.375 in
• Material: Hollow 4130 Chromoly Steel
• Hardware: Plated mounting hardware included
• Origin: Made in the USA

Fits 1971-1996 GM B-Body models.

The QA1 Rear Big Wheel Sway Bar Kit is engineered to significantly reduce body roll and improve cornering stability on vehicles equipped with larger aftermarket wheel and tire packages. This 1-1/4 inch diameter rear bar (MPN 52851) provides the necessary stiffness to manage the increased leverage of oversized wheels, ensuring flatter cornering and a more predictable driving experience.

Constructed for durability and performance, this sway bar features a rugged black powder-coated finish to resist corrosion and road debris. Designed as a straightforward bolt-on upgrade, it integrates into the factory mounting locations for an efficient installation process.

• Part Number: 52851
• Diameter: 1-1/4 inch
• Application: Rear
• Finish: Durable black powder coat
• Direct-fit for Big Wheel applications
• Made in the USA

Fits 1971-1976 Chevrolet Caprice and Impala (all trims including Classic, Estate, and Custom).

Improve the cornering performance and stability of your GM B-Body with the QA1 Front Sway Bar Kit. Engineered to reduce body roll and provide a more planted feel, this 1-3/8 inch diameter sway bar is a vital upgrade for heavy full-size Chevrolets, especially those equipped with modern wheel and tire packages. The increased stiffness over the factory bar helps maintain a flat cornering attitude without sacrificing ride quality.

• Manufactured from high-quality steel for consistent torsional rigidity
• Durable black powder coat finish for long-lasting corrosion resistance
• Precision-formed for a direct-fit, bolt-on installation
• Includes all necessary mounting hardware for a straightforward upgrade
• Made in the USA
• Manufacturer Part Number: 52850

This kit is designed to utilize factory mounting points, making it an accessible DIY project for owners looking to modernize the handling characteristics of their 1971-1976 Caprice or Impala.

Fits select 1978-1988 GM A/G-Body vehicles including Buick Regal, Chevrolet Malibu, Monte Carlo, El Camino, GMC Caballero, Oldsmobile Cutlass, and Pontiac Grand Prix/Bonneville.

Strengthen your chassis and improve rear suspension geometry with the QA1 Adjustable Rear Frame Support (MPN: 5285). These supports are engineered to eliminate unwanted chassis flex by reinforcing the connection between the upper and lower trailing arm mounts. By tying these points together, you ensure more consistent handling and improved traction during hard launches and cornering.

Each support is manufactured from 1-inch diameter cold-rolled steel tubing for maximum rigidity. The design includes zinc-plated adjustable threaded sleeves, allowing you to set the precise preload in the rear trailing arm mount after installation. These braces are specifically contoured to clear both factory and most aftermarket muffler systems, ensuring a straightforward bolt-on upgrade.

• Eliminates chassis flex to improve handling and traction
• Constructed from heavy-duty 1-inch diameter cold-rolled steel tubing
• Zinc-plated adjustable threaded sleeves for rear trailing arm preload
• Compatible with stock and aftermarket exhaust systems
• All necessary installation hardware included
• Manufactured in the USA
• Manufacturer Part Number: 5285

Fits select 1968-1972 Buick, Chevrolet, GMC, Oldsmobile, and Pontiac A-Body vehicles including Chevelle, GTO, and Cutlass.

QA1 Adjustable Rear Frame Supports are engineered to improve handling and traction by eliminating unwanted chassis flex. These braces reinforce the upper and lower trailing arm mounts, stabilizing the rear suspension geometry to prevent deflection during hard launches or heavy cornering. By tying these critical mounting points together, the chassis remains rigid, allowing the suspension to work more efficiently.

Constructed from high-strength 1-inch diameter cold rolled steel tubing, these supports are built for durability and performance. They feature zinc-plated adjustable threaded sleeves that allow you to set the proper preload in the rear trailing arm mounts after installation. The design is carefully profiled to clear both stock and aftermarket mufflers, providing a bolt-on solution that does not require exhaust modification.

• Fabricated from 1" diameter cold rolled steel tubing
• Zinc-plated adjustable sleeves for precise preload tuning
• Reinforces upper and lower trailing arm mounting points
• Clears most factory and aftermarket exhaust systems
• Made in the USA
• Manufacturer Part Number: 5284
• Includes all necessary high-grade installation hardware

Fits 1982-2002 Chevrolet Camaro and Pontiac Firebird (F-Body) models.

Adding this QA1 rear sway bar to your 1982-2002 F-Body suspension is an effective way to reduce body roll during hard cornering and improve overall handling response. This 7/8" diameter sway bar is engineered to enhance lateral stability without sacrificing ride quality, making it an ideal upgrade for both street and performance driving.

QA1 designed this bar to maximize ground clearance while hugging the rear axle for a clean, integrated look. The assembly comes ready to install with polyurethane bushings, which offer superior durability and less deflection than factory rubber. Finished in a black powder coat for long-lasting corrosion resistance, this bar is a direct bolt-in solution for your rear suspension system.

• Diameter: 7/8 inch
• Material: High-quality steel with a black powder-coated finish
• Bushing Type: Greaseable polyurethane for reduced friction and deflection
• Installation: Easy bolt-on design using factory mounting points
• Origin: Proudly made in Lakeville, Minnesota, USA
• Includes: Rear sway bar, polyurethane bushings, end links, and all necessary mounting hardware
• Manufacturer Part Number: 52835

Fits select 1962-1974 Dodge and Plymouth B-Body and E-Body vehicles, including Challenger, Charger, Coronet, Road Runner, and Satellite. This QA1 front sway bar is engineered to significantly reduce body roll and improve cornering flatneess for classic Mopar platforms.

Constructed from lightweight, high-strength 1-1/8 inch hollow 4130 chromoly steel with a 3/16 inch wall thickness, this bar provides the rigidity required for performance handling without the weight penalty of a solid bar. It features a durable black powder coat finish for long-term corrosion resistance. Note: This sway bar is designed specifically for use with QA1 K-members and lower control arms; it will not fit factory K-members or leaf spring configurations.

• Manufacturer Part Number: 52834
• Bar Diameter: 1-1/8 inch (hollow)
• Material: 4130 Chromoly Steel
• Wall Thickness: 3/16 inch
• Finish: Black Powder Coat
• Installation: Direct bolt-on to QA1 K-members and control arms
• Country of Origin: USA

Fits select 1962-1976 Mopar A-Body, B-Body, and E-Body vehicles equipped with QA1 Rear 4-Link suspension systems.

Complete your chassis tuning with the QA1 7/8" rear sway bar. Specifically engineered to integrate with QA1 rear 4-link conversions, this bar provides the lateral stability needed to reduce body roll and improve cornering predictability. It is manufactured from 4130 chromoly steel to provide high torsional stiffness with less weight than traditional solid mild steel bars. The assembly is finished in a durable black powder coat to resist corrosion and road debris.

Please note: This kit is designed exclusively for use with QA1 Rear 4-Link systems and is not compatible with factory rear leaf spring configurations.

• Part Number: 52830
• Diameter: 7/8 inch
• Material: 4130 Chromoly Steel
• Finish: Black Powder Coat
• Installation: Direct bolt-on for QA1 4-link components
• Country of Origin: Made in the USA

Fits 1964-1967 Buick, Chevrolet, Oldsmobile, and Pontiac A-Body vehicles (including Chevelle, GTO, Skylark, and Cutlass).

QA1 Adjustable Rear Frame Supports (MPN 5283) are engineered to significantly improve handling, traction, and overall suspension predictability by eliminating unwanted chassis flex. These supports reinforce the critical area between the upper and lower trailing arm mounts, preventing the frame from twisting under heavy loads or hard cornering.

Constructed from 1-inch diameter cold rolled steel tubing, these supports are built for durability and chassis rigidity. They feature zinc-plated adjustable threaded sleeves that allow you to fine-tune the preload in the rear trailing arm mounts after the installation is complete. The design ensures ample clearance for both stock and aftermarket muffler configurations.

• Replaces or reinforces factory trailing arm mounts to eliminate chassis flex.
• Fabricated from 1" diameter cold rolled steel tubing.
• Zinc-plated adjustable threaded sleeves for precise preload tuning.
• Compatible with factory and aftermarket exhaust systems.
• Complete bolt-on kit includes all necessary high-grade installation hardware.
• Proudly made in the USA.
• Manufacturer Part Number: 5283

Fits 1967-1969 Chevrolet Camaro and Pontiac Firebird models equipped with QA1 rear 4-Link suspension systems.

Enhance the cornering performance and launch stability of your classic F-body with the QA1 Rear Sway Bar Kit. Specifically engineered to complement QA1 4-Link rear suspension conversions, this 7/8-inch diameter sway bar significantly reduces body roll and improves chassis response without compromising ride quality. The bar is precision-formed to hug the rear axle and suspension components, providing a clean, low-profile look while maximizing ground clearance.

This kit is a direct bolt-on for vehicles already utilizing the QA1 4-link system. Please note that this component is not compatible with OEM leaf spring suspensions. Each bar is finished in a durable black powder coat for long-lasting corrosion resistance and includes all necessary end links and high-grade hardware for a straightforward installation.

• Part Number: 52827
• Diameter: 7/8 inch
• Finish: Black Powder Coat
• Reduces body roll and improves lateral stability
• Designed specifically for QA1 F-body 4-Link kits
• Includes heavy-duty end links and mounting hardware
• Manufactured in Lakeville, Minnesota, USA

Fits select 1967-1974 Buick Apollo, Chevrolet Camaro and Nova, Oldsmobile Omega, and Pontiac Firebird and Ventura. This front sway bar is designed to significantly reduce body roll and improve cornering stability for GM F-body and X-body platforms.

Engineered for performance, QA1 manufactures these bars from lightweight, hollow-core 4130 Chromoly steel. This material choice provides maximum torsional stiffness to keep your vehicle flat through the turns without the weight penalty of a solid bar. Each bar is CNC-formed to ensure a precise, true bolt-on installation using factory mounting locations. The assembly is finished in a durable gloss black powder coat for long-term corrosion resistance and includes all necessary hardware for a complete upgrade.

• Part Number: 52816
• Diameter: 1-1/4 inch (1.25")
• Material: 4130 hollow-core Chromoly steel
• Finish: Gloss black powder coat
• Bushings: Greasable graphite polyurethane
• Includes high-quality plated mounting hardware
• Made in the USA

Fits select 1982-2004 Chevrolet S10 and GMC Sonoma models. QA1 Street Performance Upper Control Arms are engineered to modernize the front-end geometry of your truck, making them the ideal upgrade for cruisers and daily drivers. These arms are specifically configured for use with QA1 Pro Coil Systems featuring double-shear lower mounting. Constructing the arms from high-strength tubing and billet aluminum cross shafts results in one of the lightest control arm kits available without compromising durability.

Each arm is robotically welded and finished with a high-quality powder coat for long-lasting corrosion resistance. The integrated polyurethane bushings effectively isolate road noise for a smoother ride while maintaining the stiffness required for precise handling. These kits come equipped with QA1 patented Ultimate Ball Joints, which offer superior strength compared to factory units and are designed for long-term serviceability.

• Manufacturer Part Number: 52767
• Adds 3-4 degrees of caster and 0.5 to 1 degree of negative camber (when used as a pair)
• Lightweight high-strength tubing with billet aluminum cross shafts
• Low-friction polyurethane bushings for reduced NVH and improved response
• Easy bolt-in installation to factory mounting points
• Includes integrated high-strength QA1 Ultimate ball joints
• Proudly made in the USA

Fits 1982-2004 Chevrolet S10 and GMC Sonoma models.

The QA1 52766 Street Performance Front Lower Control Arm Kit is a high-strength suspension upgrade designed for S-series trucks used for cruising and long-distance driving. These arms are specifically configured for compatibility with QA1 Pro Coil Systems, featuring a double shear lower mounting point that provides a significant increase in mounting security and durability compared to standard single-point designs.

Constructed from high-strength steel tubing with billet aluminum cross shafts, this kit offers an exceptional strength-to-weight ratio. The robotic welds and durable powder-coated finish ensure long-term resistance to the elements. To maintain ride quality, QA1 utilizes polyurethane bushings that isolate road noise and vibration for a smoother cabin experience while remaining stiff enough to provide sharp, predictable handling. This kit is designed to correct outdated factory geometry, offering 3-4 degrees of caster and 0.5 to 1 degree of negative camber when used as a complete set.

• Manufacturer Part Number: 52766
• Material: High-strength steel tubing with billet aluminum cross shafts
• Bushings: Low-friction polyurethane for noise isolation and stiffness
• Mounting: Double shear lower mount for QA1 Pro Coil Systems
• Geometry: Adds 3-4° caster and 0.5-1° negative camber
• Integrated high-quality ball joints are stronger than factory units
• Designed for use with QA1 patented Ultimate Ball Joints
• Simple bolt-in installation with no modifications required
• Made in the USA

Fits 1978-1988 GM G-Body vehicles, including Buick Regal, Chevrolet Malibu, Monte Carlo, and El Camino, GMC Caballero, and Pontiac Bonneville and Grand Prix.

The QA1 Street Performance Front Upper Control Arm Kit is engineered to modernize the front-end geometry of your G-Body. Designed for enthusiasts who prioritize cruising and long-distance drivability, these arms provide a significant improvement in steering feel and stability without compromising ride quality. The tubular design is robotically welded for precision and finished in a durable black powder coat for long-term corrosion resistance.

These arms are specifically designed to add 3-4 degrees of caster and 0.5 to 1 degree of negative camber when used as a complete set, correcting the limited factory alignment range. Each arm features a billet aluminum cross shaft and low-friction polyurethane bushings that isolate road noise while maintaining the stiffness required for responsive handling. The integrated high-quality ball joints are stronger than factory units and are designed for a long service life.

• Adds 3-4 degrees of caster and 0.5 to 1 degree of negative camber
• High-strength tubular steel construction with billet aluminum cross shafts
• Low-friction polyurethane bushings for improved response and noise isolation
• Integrated heavy-duty ball joints replace weaker OE components
• Optimized strength-to-weight ratio for reduced unsprung mass
• Configured for use with QA1 Pro Coil Systems
• Simple bolt-in installation to factory mounting points
• Made in the USA
• Manufacturer Part Number: 52765

Fits select 1978-1988 GM G-Body vehicles, including Buick Regal, Chevrolet Malibu, Monte Carlo, and El Camino, GMC Caballero, and Pontiac Bonneville and Grand Prix. This QA1 Street Performance Lower Control Arm Kit (MPN 52764) is engineered to modernize front-end geometry for improved handling and cruise comfort.

Constructed from high-strength tubing with billet aluminum cross shafts, these arms are designed for use specifically with QA1 Pro Coil Systems featuring double shear lower mounting. The robotic welds and durable powder-coated finish ensure long-lasting structural integrity and corrosion resistance. To improve alignment specs, these arms are designed to provide an additional 3-4 degrees of caster and 0.5 to 1 degree of negative camber when used with matching upper arms.

• Direct bolt-in installation for factory mounting points
• High-strength steel tubing and billet aluminum cross shafts for optimized strength-to-weight ratio
• Polyurethane bushings to isolate road noise while maintaining suspension stiffness
• Integrated high-quality ball joints designed for increased strength and service life
• Configured for double shear lower mounting on QA1 Pro Coil systems
• Made in the USA
• Manufacturer Part Number: 52764

Fits select 1964-1972 GM A/G-Body vehicles, including Chevrolet Chevelle, El Camino, Monte Carlo, Pontiac GTO, and Oldsmobile Cutlass.

QA1 Street Performance Lower Control Arms are the ideal suspension upgrade for enthusiasts who prioritize ride quality and stability during long-distance cruising. These arms are specifically configured for compatibility with QA1 Pro Coil Systems, utilizing a double shear lower mounting point to ensure maximum strength and component security.

Built from high-strength tubing paired with billet aluminum cross shafts, these arms are significantly lighter than factory stamped-steel components while offering superior durability. Each arm is robotically welded and finished with a high-quality powder coating for corrosion resistance. To improve handling without sacrificing comfort, QA1 uses low-friction polyurethane bushings that isolate road noise while maintaining a stiff, responsive feel. This kit also features integrated ball joints that are stronger than OE units, providing a longer service life and improved safety.

• Manufacturer Part Number: 52737
• Engineered for QA1 Pro Coil Systems with double shear lower mounting
• Corrects outdated front-end geometry for better tracking and tire contact
• Adds 3-4° of caster and 0.5° to 1° of negative camber (when paired with upper arms)
• Tubular construction with billet aluminum cross shafts for optimized strength-to-weight ratio
• High-quality polyurethane bushings for reduced deflection
• Includes high-strength integrated ball joints
• Made in the USA

Fits select 1964-1972 GM A-Body and G-Body vehicles, including Buick Skylark, Chevrolet Chevelle, El Camino, Monte Carlo, Oldsmobile Cutlass, and Pontiac GTO/LeMans.

The QA1 Street Performance Upper Control Arm Kit is engineered to correct outdated front-end geometry on classic GM A and G-Body platforms. These arms are specifically configured for use with QA1 Pro Coil Systems featuring double-shear lower mounting. By optimizing the suspension's pivot points, these arms are designed to add 3 to 4 degrees of caster and 0.5 to 1 degree of negative camber when installed together, significantly improving directional stability and cornering grip over factory settings.

Built for the rigors of street performance and long-distance cruising, these arms utilize high-strength tubing paired with billet aluminum cross shafts to achieve a superior strength-to-weight ratio. Each arm is robotically welded and finished with a durable powder coat. To ensure a comfortable ride without sacrificing precision, QA1 utilizes low-friction polyurethane bushings that isolate road noise while maintaining the stiffness required for responsive handling. The integrated high-quality ball joints provide increased strength and service life compared to original equipment components.

• Manufacturer Part Number: 52722
• Compatibility: Configured for QA1 Pro Coil Systems with double shear lower mounting
• Geometry Correction: Adds 3-4° caster and 0.5-1° negative camber
• Construction: High-strength tubing with billet aluminum cross shafts
• Bushings: Low-friction polyurethane for noise isolation and stiffness
• Installation: Easy bolt-in design
• Origin: Made in the USA

Fits 1971-1976 Chevrolet Caprice and Impala models across all submodels including Classic, Estate, and Sport. This QA1 Big Wheel Street Performance Lower Control Arm Kit is engineered to modernize the handling characteristics of your GM B-Body. By correcting outdated factory front-end geometry, this kit provides the stability and alignment precision required for street performance applications, particularly those utilizing larger wheel diameters.

Constructed with an optimized strength-to-weight ratio, these arms are designed to withstand the loads of performance driving without adding unnecessary bulk. The kit features low-friction bushings for smooth suspension articulation and is specifically designed for use with QA1 patented Ultimate Ball Joints. This 100% bolt-in solution replaces your worn OE components with no cutting or welding required.

• Manufacturer Part Number: 52721
• Compatible with QA1 Ultimate Ball Joints
• Corrects factory front-end geometry for improved handling
• Low-friction bushings reduce suspension bind
• High-strength, lightweight tubular construction
• Simple bolt-in installation to factory mounting points
• Proudly Made in the USA

Fits select 1970-1996 GM A-Body, B-Body, F-Body, and X-Body vehicles including Chevrolet Camaro, Caprice, and Impala SS, Pontiac Firebird, and Buick Roadmaster.

QA1 Street Performance Front Lower Control Arms are engineered to modernize the handling of your classic GM platform. These arms replace weak factory stamped steel components with high-strength tubular steel and billet aluminum cross shafts, offering a superior strength-to-weight ratio. Designed specifically for street use, cruising, and long-distance driving, they utilize polyurethane bushings to isolate road noise while maintaining the stiffness required for precise cornering and improved steering response.

These arms are specifically configured for use with QA1 Pro Coil Systems featuring a double-shear lower shock mount. By correcting outdated front-end geometry, these arms are designed to add 3-4 degrees of caster and 0.5 to 1 degree of negative camber when used in conjunction with QA1 upper control arms, significantly improving high-speed stability and tire contact during cornering.

• Optimized Geometry: Corrects factory suspension angles for better handling and stability.
• High-Strength Construction: Robotically welded tubular steel with a durable black powder-coated finish.
• Billet Aluminum Cross Shafts: Provides a lightweight yet rigid mounting point for the suspension.
• Integrated Ball Joints: Includes QA1 Ultimate Ball Joints for increased strength and long-term serviceability.
• Polyurethane Bushings: Delivers a smooth ride by isolating NVH while reducing deflection under load.
• Installation: Direct bolt-in design requiring no modifications to the factory chassis.
• Manufacturer Part Number: 52720
• Origin: Made in the USA

Fits 1971-1974 Buick Apollo and Pontiac Ventura.

QA1 Street Performance Front Lower Control Arms are engineered to modernize the suspension geometry of your classic GM X-Body. These arms are specifically configured for use with QA1 Pro Coil Systems featuring double shear lower mounting points. Constructed from high-strength steel tubing paired with billet aluminum cross shafts, this kit offers a significant weight reduction over factory stamped-steel components while increasing overall rigidity and durability.

Designed for enthusiasts who prioritize both ride quality and handling, these arms utilize polyurethane bushings to isolate road noise while maintaining the stiffness required for precise steering response. The integrated ball joints are significantly stronger than OE units and are designed for long-term service. When installed, these arms are designed to add 3-4 degrees of caster and 0.5 to 1 degree of negative camber to correct outdated front-end geometry for better tire contact and cornering stability.

• Direct bolt-in installation using factory mounting locations
• Lightweight high-strength tubing and billet aluminum cross shafts
• Specifically configured for QA1 Pro Coil Systems with double shear lower mounting
• Adds 3-4° caster and 0.5-1° negative camber for improved handling
• Low-friction polyurethane bushings for a smooth, quiet ride
• Robotically welded and finished in a durable black powder coat
• Compatible with QA1 patented Ultimate Ball Joints
• Made in the USA
• Manufacturer Part Number: 52719

Fits select 1970-1996 GM F-Body, A-Body, X-Body, and B-Body models including Chevrolet Camaro, Caprice, Impala, and Pontiac Firebird.

QA1 Street Performance upper control arms are engineered to modernize the front suspension geometry of classic GM platforms. Designed primarily for street use and long-distance cruising, these arms are configured for QA1 Pro Coil Systems with double shear lower mounting. The combination of high-strength steel tubing and billet aluminum cross shafts results in a lightweight assembly with significantly improved strength and durability over factory components.

These arms are designed to add 3-4 degrees of caster and 0.5 to 1 degree of negative camber to improve tire contact and steering response. They feature polyurethane bushings to isolate road noise for a comfortable ride while providing the necessary stiffness for improved handling. Each kit is robotically welded, powder-coated, and include stronger-than-stock integrated ball joints for long-term service.

• Manufacturer Part Number: 52718
• Adds 3-4° caster and 0.5-1° negative camber when used as a kit
• High-strength steel tubing with billet aluminum cross shafts
• Low-friction polyurethane bushings for noise isolation and ride quality
• Designed for use with QA1 Pro Coil Systems (double shear mounting)
• Compatible with QA1 patented Ultimate Ball Joints
• Durable high-quality powder coat finish
• Easy bolt-in installation with no fabrication required
• Made in the USA

Fits select 1967-1974 Chevrolet Camaro, Chevy II, Nova, Pontiac Firebird, Ventura, Buick Apollo, and Oldsmobile Omega.

QA1 Street Performance upper control arms are engineered to modernize the front-end geometry of classic GM F-Body and X-Body platforms. These arms are the ideal solution for enthusiasts who prioritize ride quality during long-distance cruising while demanding improved handling characteristics. By correcting outdated factory geometry, these arms provide significantly better tire contact patches and steering response.

Constructed from high-strength tubing and paired with precision-machined billet aluminum cross shafts, these arms offer a superior strength-to-weight ratio. Each unit is robotically welded for consistent penetration and finished with a durable powder coat for long-term corrosion resistance. Low-friction polyurethane bushings are utilized to isolate road noise and vibration, ensuring a smooth ride without the deflection found in factory rubber bushings.

• Geometry Correction: Adds 3-4 degrees of caster and 0.5 to 1 degree of negative camber (when used as a complete kit).
• Construction: High-strength steel tubing with billet aluminum cross shafts.
• Bushings: Low-friction polyurethane for improved stiffness and noise isolation.
• Ball Joints: Includes high-quality integrated ball joints for increased strength and service life.
• Compatibility: Configured for use with QA1 Pro Coil Systems.
• Manufacture: Made in the USA.
• Part Number: 52717

Fits select 1999-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 2WD models with coil spring front suspension.

Correct your front-end geometry and gain much-needed strength with the QA1 Tubular Upper Control Arm Kit (MPN: 52626). Designed specifically for "New Body Style" (NBS) trucks that have been lowered or built for performance, these arms provide increased caster to improve straight-line stability and steering feel. The tubular design offers superior rigidity compared to factory stamped steel arms while providing additional clearance for coil-over conversions and other suspension upgrades.

These arms are a direct bolt-in replacement for the OEM units and come fully assembled with high-quality ball joints and bushings pre-installed for a straightforward installation. They are compatible with factory spindles as well as QA1 drop spindles (Part Number: 9056-120). Each kit is manufactured in Lakeville, Minnesota and finished in a durable black powder coat.

• Improved caster geometry for better tracking and cornering stability
• Stronger and lighter tubular steel construction compared to stock stamped units
• Durable black powder coat finish for long-lasting corrosion resistance
• Direct bolt-on installation using factory mounting points
• Pre-installed ball joints and bushings for reduced install time
• Proudly made in the USA
• Note: Only fits 2WD models with coil spring front suspension; not compatible with torsion bar equipped vehicles

The QA1 52623-S750 Single Adjustable Front Coilover Crossmember System fits 1973-1974 Chevrolet C10 Pickup (Base) models, providing a comprehensive front suspension overhaul. This system replaces the bulky factory crossmember and control arms with modern, performance-oriented components designed to improve handling and allow for a custom ride height stance.

At the core of this system are QA1 single adjustable shocks, which offer simultaneous compression and rebound tuning via a single knob to suit various driving conditions. The tubular upper and lower control arms are engineered with performance-enhancing geometry, offering greater strength and precision than stock stamped-steel units. This kit is designed as a direct bolt-in installation, utilizing factory mounting points to simplify the conversion process.

• Manufacturer Part Number: 52623-S750
• Adjustability: Single adjustable shocks for simultaneous compression and rebound valving
• Height Adjustment: Integrated coilover design allows for precise ride height control
• Springs: Includes high-travel springs for improved suspension articulation
• Included Components: Upper and lower control arms, single adjustable shocks, springs, upper bracket, crossmember, and all necessary mounting hardware
• Manufacturing: Made in the USA

Fits 1973-1974 Chevrolet C10 Pickup Base.

The QA1 52623-D750 Double Adjustable Front Coilover Crossmember System is a comprehensive suspension overhaul designed to replace the heavy factory crossmember and outdated front-end components. This system transforms the handling of 1973-1974 C10 trucks by introducing modern geometry and precision adjustability. The included double-adjustable shocks feature independent dials for compression and rebound, allowing you to fine-tune the damping for street cruising or aggressive track use.

This bolt-in conversion includes high-strength upper and lower control arms engineered to improve suspension travel and alignment stability. The integrated crossmember and upper brackets provide a rigid foundation for the 750lb/in high-travel springs, enabling precise ride height adjustments for the perfect stance. Built for durability and performance, this kit is manufactured in the USA and includes all necessary hardware for a straightforward installation.

• Manufacturer Part Number: 52623-D750
• Independent compression and rebound adjustment for precise shock tuning
• High-travel 750lb/in springs for consistent performance
• Performance-optimized suspension geometry for improved handling
• Heavy-duty upper and lower control arms included
• Includes front crossmember and upper shock brackets
• Adjustable ride height for customized truck stance
• Made in the USA with a bolt-in design

Fits the 1973-1974 Chevrolet C10 Pickup Base.

The QA1 Double Adjustable Front Coilover Crossmember System (MPN: 52623-D650) is a comprehensive suspension overhaul designed to replace factory stamped-steel components with precision-engineered performance parts. This bolt-in kit allows for fully adjustable ride height and significantly improved suspension geometry for better handling and front-end control.

At the heart of the system are QA1 double adjustable shocks, featuring independent dials for compression and rebound tuning. This allows you to dial in the perfect valving for street cruising, track days, or towing. The kit includes 650lb/in high-travel springs, tubular upper and lower control arms, and a replacement crossmember to provide superior strength and clearance compared to stock setups.

• Double adjustable shock valving for independent compression and rebound control
• 650lb/in high-travel springs optimized for heavy-duty front-end performance
• High-strength tubular upper and lower control arms for enhanced geometry
• Includes specialized crossmember, upper brackets, and all necessary mounting hardware
• Direct bolt-in installation to factory mounting points
• Manufacturer Part Number: 52623-D650
• Made in the USA

Fits 1963-1972 Chevrolet C10 Pickup Base.

Modernize your classic truck's handling and stance with the QA1 Front Coilover Crossmember System. This comprehensive kit (MPN 52622-S850) replaces the bulky factory front crossmember and suspension with a performance-engineered setup designed for superior geometry and adjustable ride height. It provides the clearance needed for larger wheels and modern engine swaps while significantly improving front-end rigidity and steering response.

This system features QA1 single adjustable shocks, allowing you to fine-tune the rebound and compression valving simultaneously with one knob to match your driving style. The included high-travel springs and performance-optimized control arms work together to eliminate the geometry compromises of the original OE suspension.

• Complete bolt-in installation with included hardware; no welding required
• Single adjustable shocks provide 18 levels of simultaneous compression and rebound adjustment
• Upper and lower control arms with performance-enhancing geometry
• Integrated crossmember and upper shock brackets for increased strength over stock
• Adjustable ride height to achieve the perfect truck stance
• Proudly made in the USA for lasting durability and fitment
• Manufacturer Part Number: 52622-S850