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BUICK GS Chassis & Suspension

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Summit Racing™ Frame Brace Kits

Summit Racing™ frame brace kits are designed to easily install and strengthen the factory frame of your classic car or truck. The benefit of stiffening the frame is improved handling and a tight predictable feel. Reinforce your chassis and create a custom pro touring style, corner carving ride with these Summit Racing™ frame brace kits. *Constructed From DOM tubing *Computer Designed, Machined, and Bent *Welding Required for most kits *Adjustable transmission crossmember for Manuals or overdrives included *Generous openings for Dual Exhaust pipe routing *Exhaust hangers provided

4.22 out of 5 stars ( 69 )

$199.99

$979.99

UMI Performance Front Sway Bars

UMI Performance front sway bars are designed to reduce body roll and under-steer and increase corning capabilities, resulting in a more balanced suspension. These front sway bars are more rigid than the factory originals and will bolt directly in place with no modifications. Each kit includes new Energy Suspension end links and greaseable sway bar bushings with new zinc plated clamshells. Nearly two dozen models are available for vehicles from 1963 and up; order the sway bar recommended for your application.

4.7 out of 5 stars ( 99 )

$242.99

$299.99

UMI Performance Front and Rear Sway Bar Kits

UMI Performance sway bars are designed to reduce body roll and understeer and increase cornering capabilities, resulting in a more balanced suspension. The front sway bar is more rigid than the factory model and comes complete with new polyurethane end links and greaseable sway bar bushings. The rear sway bar is supplied with new Grade 8 mounting hardware and locknuts. UMI Performance sway bars are manufactured from 4140 chromoly steel—and formed as one piece to ensure maximum strength and performance. Each rear sway bar is heat-treated and heat-formed to maintain longer memory than a cold bent bar, while the front sway bar is CNC-bent for a precise and accurate fit every time. Order the kit recommended for your vehicle.

4.63 out of 5 stars ( 72 )

$356.82

$370.62

BMR Level 2 Suspension Handling Packages

BMR Level 2 suspension handling packages are matched and developed to handle the twists and turns of your favorite road. Installation of these American-made components takes only a few hours of your time with basic hand tools. You can install superior handling on your ride today with BMR Level 2 Suspension handling packages. These BMR Level 2 handling packages include: * Lowering springs * Front and rear sway bars * Bilstein shocks * Upper and lower A-arms * Rear upper and lower control arms * Control arm mount braces

3.63 out of 5 stars ( 8 )

$2,349.00

Speedtech Performance USA Frame Brace Kits

Speedtech Performance USA frame brace kits prevent the sloppy, unpredictable feel of a weak body frame. You can increase rigidity by linking these braces to the strong structural undersides of your chassis. The braces are constructed from 1.5 in. DOM steel tubing that's computer designed, machined, and CNC-bent for consistent fitment. Speedtech Performance brace kits offer the reinforcement your race chassis demands.

3.2 out of 5 stars ( 10 )

$841.46

UMI Performance Stage 2.5 Handling Kits

UMI Performance Stage 2.5 handling kits bring you the best of both worlds—combining UMI's Stage 2 handling kit with four-corner Viking coilover ride height adjustability. These Stage 2.5 handling kits feature UMI's most popular combination of front and rear springs, along with all the necessary components and hardware needed to transform your GM vehicle for improved handling, ride quality, and an impressive stance. Ride height is adjustable from stock to 2 in. below stock ride height, and the Viking shocks feature 19 settings in both compression and rebound. More than a dozen kits are available, with numerous options. Select the model recommended for your vehicle. Stage 2.5 handling kits include: * Tubular lower front A-arms with polyurethane bushings * Upper front A-arms with Delrin© bushings * Viking coilover kit * Heavy-duty front sway bar with new bushings and end-links * Front upper and lower race-quality hardware kit * Solid heat-treated rear sway bar * Tubular rear lower control arms with polyurethane bushings * Tubular rear upper control arms with polyurethane bushings * Tubular frame braces with hardware * Replacement rear-end housing bushings * Rear control arm race-quality hardware kit * UMI bolt-on rear coilover kit * Thrust bearing kit (x 2) * Spanner wrench kit Note: Rear coilover kit fits GM axle housing only. Aftermarket axle housing fitment is not guaranteed.

Not Yet Reviewed

$4,649.99

On Sale

Hooker Blackheart Transmission Crossmembers

Hooker Blackheart transmission crossmembers provide easy installation for a variety of engine and transmission swap combinations. Manufactured from steel with a black powdercoat, these crossmembers are designed to be used with Blackheart engine adapter plates for a trouble-free LS, LT, Hemi, Coyote, etc. engine swap. Order the model recommended for your vehicle. Blackheart crossmember features: * Comprehensively designed as an integral part of the complete Hooker swap system, providing maximum level of inter-component compatibility * Designed specifically for use with Hooker engine adapter plates * High-arch exhaust passages provide maximum available exhaust ground clearance * Design geometry replicates stock drivetrain height, inclination angle, and offset for optimized vehicle and component compatibility * High-strength/low alloy steel construction provides desirable balance of strength, stiffness, weight, and cost * Powdercoat finish provides attractive, corrosion-resistant appearance * Provide bolt-in compatibility with Hooker/Holley engine mounts, swap headers, exhaust systems, and oil pans * Hardware included

4.37 out of 5 stars ( 27 )

$449.95


$403.95

RideTech MuscleBar Sway Bars

RideTech has upgraded the traditional notion of sway bars with their MuscleBar. Using precision CNC tubing benders, investment cast steel bar ends, and Delrin lined mount bushings, Ridetech produces sway bars with unheard of dimensional and rate accuracy. MusceBar features: * Precision CNC-bent tubing for accurate and repeatable fitment * Exact bar rates included with each bar * Delrin-lined frame mount bushings allow easy and predictable rotation over the stiction of polyurethane or rubber * Investment cast steel bar ends offer performance and appearance improvements over the traditional manufacturing * Easy installation spherical end links with barrel lock nuts * Compatible with OE manual steering, OE power steering, and aftermarket power steering conversions

3.96 out of 5 stars ( 24 )

$260.00

$395.00

Classic Performance Tubular Control Arms

Classic Performance tubular control arms are designed to add up to five degrees of caster in certain applications, while providing full wheel travel. They're manufactured from 1.250 in., 0.120 in. thick wall DOM tubing, with pivot barrels made from 1.500 in., 0.188 in. thick wall DOM tubing to help eliminate distortion. These control arms use bushings made from self-lubricating, non-squeak patented material that will outlast any rubber or polyurethane bushing. The control arms are designed as bolt-in replacements for your factory originals. Classic Performance tubular control arms will tighten up your front suspension and give you that performance ride through the corners and on straight roads. Select the model and options recommended for your vehicle.

4.62 out of 5 stars ( 125 )

$974.99

Classic Performance Sway Bar Kits

Get great handling for your ride with Classic Performance rear sway bar kits. They help to reduce body roll and control oversteer and understeer in corners. These kits come complete with a sway bar, poly bushings, mounting brackets, and all necessary hardware.

4.61 out of 5 stars ( 218 )

$248.99

Summit Racing™ Lightweight Transmission Crossmembers

Strengthen your transmission support and reduce the weight of your vehicle with Summit Racing™ lightweight transmission crossmembers. Through advanced design and manufacturing, these crossmembers are stronger than standard boxed-steel transmission crossmembers, while weighing an average of 35-percent less. The crossmembers are a direct bolt-in and do not require any additional brackets or adapters to complete the installation. They also allow you to run a true dual-exhaust system with most popular GM transmissions and do not affect ground clearance. The welded design with clear powdercoat finish gives these lightweight crossmembers a fabricated look that's sure to complement your ride. Order the model recommended fit your application.

4.86 out of 5 stars ( 14 )

$329.99

$436.99

Addco Performance Anti-Sway Bar Kits

Reduce body roll, understeer, and generally sloppy handling with Addco Performance anti-sway bar kits. The bar is made from high-carbon steel—and is hardened and stress-relieved to give your suspension superior support during sudden or sharp turns. Most kits include 12-gauge zinc chromate plated brackets with fully enclosed bushings, along with heat-treated end link bolts for added strength. Order the model designed for your vehicle application.

4.27 out of 5 stars ( 272 )

$235.33

$252.59

Summit Racing™ Dual-Exhaust Transmission Crossmembers

Summit Racing™ steel transmission crossmembers allow you to run a true dual-exhaust system with most popular GM transmissions. They have a patented double-hump design, so you don't have to compromise ground clearance by running pipes under the crossmember, and they're a complete bolt-on deal—no custom fabricating or realignment is needed. The parts are made from 1/8 in. thick boxed tubing to handle the frame-twisting power of big blocks. Order the crossmember recommended for your vehicle and transmission application.

4.68 out of 5 stars ( 589 )

$338.99

$432.99

UMI Performance Bolt-In Viking Rear Coilover Kits

UMI Performance bolt-in Viking rear coilover kits allow full ride height, spring rate, and damping adjustability. The double shear upper mount is a direct bolt-in and holds a true 2.5 in. diameter coilover spring. The FEA designed lower bracket bolts in using the standard shock mounting hole as well as an additional reinforcement hole. Drilling one 3/8 in. hole per side is required to complete installation. The coilover kits utilize Viking shocks that are 19-way adjustable in both compression and rebound to ensure the perfect setting for every application. Viking shocks are fully rebuildable. The 2.5 in. diameter coilover springs are available in 14 in. long, 110 lb. spring rate for drag use; 14 in. long, 125 lb. spring rate for street use; and 12 in. long, 150 lb. spring rate for autocross and road race applications. The coilover kits have been tested with 1.5 in. diameter UMI trailing arms, as well as UMI's 22mm sway bar and 32mm drag anti-roll bar. Fitment with other brand sway bars and larger diameter control arms is not guaranteed. Please contact UMI for additional information regarding fitment. Key features: * Brackets manufactured entirely from 3/16 in. mild steel * Laser-cut brackets for consistency and a precise fit * TIG-welded for superior strength and clean looks * Powdercoated brackets for a long lasting finish * Viking double-adjustable shocks offer 19 compression and 19 rebound adjustments * 3 spring rate options, depending upon application * Bolt-in design * No welding required * Spacers included for use with control arm relocation brackets

4.6 out of 5 stars ( 10 )

$1,805.99

BMR Sway Bars

BMR sway bars are the most significant handling upgrade you can make to your vehicle. With hand tools and about an hour or so of your time, BMR sway bars will deliver the most noticeable handling improvement to your ride. BMR chooses to cold form their tubular sway bars instead of the conventional hot formed process. For you that means better resistance to torsional fatigue, more consistent "memory" retention, and money well spent for lasting performance and driving enjoyment. BMR put countless hours into developing and testing the ideal rates for their bars, so feel their passion for perfection by installing one of their sway bar kits--you're in control with BMR Suspension.

4.74 out of 5 stars ( 102 )

$479.95

Flaming River 1968-72 Chevelle Power Rack and Pinion Cradle Kits

Flaming River 1968-72 Chevelle power rack and pinion cradle kits modernize and strengthen your current steering system. The precision JIG-welded units install with basic hand tools into your stock steering mounting holes, beefing up your rack gear and still allowing for a full turning radius. Whether you have a small or big block engine, these kits use a unique travel bar system that connects new tubular inner tie rod ends to the original pivot points to reduce bump steer. Numerous kits are available with or without a tilt column and steering pump; and most include wiring connectors, universal joints and shafting, mounting hardware, a billet swivel floor mount, and a polished aluminum mounting reservoir. Enjoy an updated steering system that's lighter and stronger with a Flaming River 1968-72 Chevelle power rack and pinion cradle kit.

5.0 out of 5 stars ( 1 )

$3,506.99

$4,174.99

Detroit Speed Tubular Anti-Roll Bars

Detroit Speed tubular anti-roll bars improve cornering and reduce body roll. They are larger-than-stock and come with everything you need to bolt them on, including greaseable polyurethane bushings and end links. Detroit Speed tubular anti-roll bars are tested to ensure optimal performance.

5.0 out of 5 stars ( 3 )

$359.95

Goodmark Rear Frame Crossmembers

Save money over the dealer price with Goodmark rear frame crossmembers. Manufactured from steel, they provide an OE fit and performance, just like the originals you are replacing. Restore and/or repair your classic vehicle with "the original mark of quality"—Goodmark.

Not Yet Reviewed

$138.99

Detroit Speed Control Arm and Spindle Kits

Detroit Speed control arm and spindle kits work together on your vehicle to enhance performance. The DSE forged spindle is taller than stock to improve handling by modifying the camber curve, resulting in a negative camber gain during suspension compression. Your stock steer arms mount in the optimal location to minimize bump steer. The DSE tubular control arms offer a precise fit and are TIG-welded in fixtures to guarantee geometric accuracy and repeatability. The upper arms provide increased strength and additional positive caster, and the lower arms feature a robust tubular design with gussets and a cross brace. Both have Delrin bushings, new ball joints, and a gloss black powdercoated finish. Install an integrated system that delivers performance for your ride--Detroit Speed control arm and spindle kits.

Not Yet Reviewed

$2,275.90

RideTech StreetGrip Suspension Systems

What are some of the virtues of a quality RideTech StreetGrip suspension system? For starters, they're easy to install. The Delrin bushings eliminate deflection, and dual-rate springs allow the vehicle to transition small road irregularities via a compliant spring rate. Adjustable monotube shocks deliver premium ride quality and handling performance, while the tall upper ball joints reposition the control arms to correct camber for more stability. Sway bar end links are also included to minimize body roll through corners. Give your vehicle the components it needs to handle the road with a StreetGrip suspension system—RideTech's one-box solution for better ride and control. Order the model designed for fitment on your vehicle.

5.0 out of 5 stars ( 1 )

$2,165.00

$2,540.00

Aldan American RCX Series Coilover Kits

Aldan American offers RCX Series coilover kits for countless vehicles. The double adjustable gas-charged shocks are available for front and/or rear in spring rates varying from 160 lbs. to 800 lbs. RCX coilovers can be used on stock or lowered applications, with big block or small block engines. Hardware is included for installation. Order the kit best suited for your suspension needs.

Not Yet Reviewed

$1,998.95

BMR Xtreme Anti-Roll Bars

BMR Xtreme anti-roll bars feature a massive diameter and include heavy-duty rod ends. These sway bars have an easy bolt-on design with the option to be welded, if desired. The factory rear sway bar works well for handling, but falls short when it comes to drag racing. There are two main reasons for this—the OE bar diameters are nowhere near the right diameter to control torque loading on a launch, and the OE-type bar only attaches at the control arms with no frame attachment points. This allows for too much body separation and no way to control it. By attaching the end links to the frame, body separation is minimized and converted into forward momentum. This, combined with the large diameter bar's ability to better control torque loading, creates more consistent and predictable launches and better 60 ft. times. BMR Xtreme anti-roll bars come with all necessary Grade 8 mounting hardware.

4.54 out of 5 stars ( 26 )

$519.95

Helix Rear 4-Bar and Coilover Conversion Kits

Helix offers rear 4-bar and coilover shock conversion kits for a wide range of applications—including many Buick, Chevrolet, Oldsmobile, and Pontiac cars and trucks from the 1960s and '70s. These suspension kits are a precision balance of ride comfort and maximum road adhesion. You'll immediately feel the difference with Helix coilovers with reduced body roll on corners, nose drive, and squat when accelerating. The springs are manufactured from the highest quality spring steel, using state-of-the-art equipment and the latest technology available. The coilover springs are available in different spring rates. Improve performance without compromising consistency and durability. Order the kid recommended for your vehicle. Additional details: * Style: 4 bar and coilover shock kit * Valving: Performance street * Finish: Black * Upper coil style: Pigtail * Adjustable: Uppers – Yes; lowers – no * Material: Heavy-duty Hardened Steel * Shock finish: Polished * Shock color: Silver * Charged: Nitrogen * Upper mounting: Spike * Lower mount: Stud Plate * Style: Triangulated * Bushings: Polyurethane * Installation: Bolt-on * Tubing: 2x3 lowers and 1.5 in. uppers * Hardware: Included * Instructions: Included

Not Yet Reviewed

$995.95

Detroit Speed Front Speed Kit 2 Suspension Kits

Detroit Speed front Speed Kit 2 handling packages are bolt-on components meant to take the guesswork out of upgrading—and improve the overall suspension. These kits are designed for builders interested in taking their vehicles' performance to a higher level. They include parts to improve handling, ride quality, and caster/camber; and then take everything up a notch by including coilover springs and shocks to adjust ride height. When you want your classic muscle car to perform like a modern-day sports car, install a front Speed Kit 2 handling package and have some fun. Dozens of models and options are available for applications from the 1960s and up.

Not Yet Reviewed

$4,335.95

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