Speedtech Performance USA at Summit Racing

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Speedtech Performance USA 1967-72 C10 Truck ExtReme Street Chassis Kits

Speedtech Performance USA ExtReme Street chassis kits are built for 1967-1972 C10 owners who want aggressive stance with the comfort and drivability of a true street truck. Designed for trucks that get driven, not just displayed—they deliver wide tire fitment, improved traction, reduced wheel hop, and confident handling without sacrificing ride quality. Featuring Speedtech's proven ExtReme front suspension geometry, rear torque arm suspension, and QA1 Ultra Ride single adjustable shocks, these chassis kits deliver modern performance with true street comfort. You can get the low, wide look your C10 deserves without compromising suspension travel or street manners. Designed around modern wheel and tire packages, the ExtReme Street Chassis delivers the pro-touring stance builders want while maintaining proper geometry and real-world usability. Equipped with QA1 Ultra Ride 18-way single adjustable shocks, these chassis kits allow you to fine-tune ride quality for the right balance of comfort and performance. The included rack-and-pinion steering and optimized front geometry deliver up to 30 degrees of steering angle, tighter response, better feedback, and improved confidence behind the wheel; while the rear torque arm suspension improves traction and reduces wheel hop. Box-welded construction with internal gusseting delivers the strength to handle modern horsepower, wide tire setups, and the demands of long-term performance. The result is a truck that feels more planted under acceleration, more stable through corners, and smoother over rough roads. Fitment Notes: * Fits 1967–1972 Chevrolet and GMC 1/2-ton trucks * Short bed applications only - will not fit long wheelbase trucks * Raised bed floor modifications (3.5–4 in.) required * Factory steering columns are not compatible. Speedtech recommends an Ididit steering column for proper fitment * Fits up to a 315mm front and rear tires with full steering travel, using 10.5 in. front and 11–12 in. rear wheel setups * Requires a power steering pump capable of 1,300 psi and 3 gpm flow rate * Ford 9 in. rear housing (3rd member not included) measures 61 in. flange to flange Chassis kit includes: * Speedtech ExtReme Street chassis with satin black powdercoated finish * Sweet Manufacturing dual piston rack and pinion steering * Rear torque arm suspension system with Ford 9 in. housing * 31-spline axles * Adjustable universal transmission crossmember * QA1 Ultra Ride coilover shocks * Control arms * Tall 1st Gen F-body front spindles * Front sway bar * Battery box * Body mounts

Not Yet Reviewed

$20,467.91

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 )

$934.96

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$1,454.96

Speedtech Performance USA Billet Body Mounts

Speedtech Performance USA billet body mounts solve those problems you may be having with the original body mounts on your car. Worn rubber body mounts enhance body roll and give handling a sloppy feel. If you're replacing your suspension components, these body mounts with their solid aluminum construction are ideal. They're CAD-designed and CNC-machined in-house to exact tolerances from T6061-T6 billet aluminum and then anodized black for maximum durability. Speedtech Performance USA billet body mounts also include all Grade 8 hardware needed for installation.

Not Yet Reviewed

$238.16

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$310.99

Speedtech Performance USA Motor Mounts

With the way Pro Touring cars are driven, your suspension is not the only system on your car that needs to be updated with heavy-duty parts. Speedtech Performance USA motor mounts are designed to help keep your engine saddled in place when you are tossing the car through corners while getting on and off the throttle. Compared to rubber mounts, their polyurethane construction makes them stronger and more resistant to the abuse seen in pro touring driving conditions.

4.8 out of 5 stars ( 5 )

$102.99

Speedtech Performance USA Pro Touring 1967-69 F-Body Complete Front Subframes

Speedtech Performance USA Pro Touring 1967-69 F-body complete front subframes are designed as bolt-in packages that will elevate your first generation F-body to an entirely new level of performance. They include a specially matched, high-clearance tubular control arm front suspension; double-adjustable coilover shocks; and power steering rack and pinion for the optimum in handling performance and daily drivability. These suspension packages are available for a variety of classic muscle cars from the 1960s. Additional features: * Strong box-type, laser-cut and JIG-welded construction * Reduced weight over factory frames * Factory-alignment holes offer ease of aligning frame to body * Guldstrand mod geometry already built-in * Upper control arm mounts feature additional camber curve adjustability * Increased header and exhaust clearance * Fully adjustable rear crossmember fits all GM transmissions, as well as T-56 and TKO * Built-in tow/tie-down hooks eliminate strapping around painted frames * Accepts most aftermarket suspension components which fit a factory frame--and that clear coilover shocks * Heat-treated tubular 1 1/4 in. sway bar kit * Power rack and pinion unit with steering arms * QA1 double adjustable coilover shocks with thrust washers and adjusting wrench included; allows for 2 1/2 in. of ride height adjustment * Mounting hardware, instructions, and custom alignment specs

Not Yet Reviewed

$7,452.00

Speedtech Performance USA Tubular Lower Control Arms

Stamped steel factory lower control arm assemblies do a great job of keeping the car off the ground. Outside of that, they don't do much for your car's performance. Speedtech Performance USA tubular lower control arms are designed to meet and exceed the needs of your performance automobile. Their tubular construction dramatically increases strength in a lighter weight design, and the included Delrin bushings offer strength and longevity without the flex of rubber or squeak of polyurethane. Swivel link sway bar mounts allow for articulation without bind; while urethane bump stops, heavy-duty ball joints and Grade 8 hardware complete the package, helping boost your car to a greater the performance level. These control arms are constructed from CNC mandrel-bent 1.50 in. diameter, .156 in. wall DOM tubing. All components are laser-cut and CNC-machined for exact tolerances, welded together, and then powdercoated gloss black.

Not Yet Reviewed

$826.80

Speedtech Performance USA Clutch Master Cylinder Brackets

The key to adapting clutch hydraulics to earlier muscle cars is using Speedtech Performance USA clutch master cylinder brackets. Don't be fooled by companies using a similar bracket with incorrect dimensions. These brackets are CNC laser-cut directly from the GM blueprints and include the proper heim joint end with stainless spacer. The brackets are made from durable steel and then black powdercoated for protection. Order the model recommended for fitment on your vehicle.

4.25 out of 5 stars ( 4 )

$88.40

Speedtech Performance USA Transmission Tunnel Covers

Speedtech Performance USA transmission tunnel covers will save you from major construction on your old musclecar when installing a T-56 transmission with its larger case and different shifter location. This simple, yet effective design works great for use with an aftermarket automatic shifter where a flat mounting surface is required.

4.33 out of 5 stars ( 3 )

$186.16

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$186.99

Speedtech Performance USA Ackermann and Bump Steer Kits

Wouldn't it be great to have a little extra edge when turning into a hard corner? Speedtech Performance USA Ackermann kits lengthen the steering linkage assembly and increase turn-in steering angle on your inside tire. Although they don't affect straight line driving, the steer kits can help pull you through the corners faster, increasing corner speeds and reducing your lap times. Made from strong billet aluminum, these components are built to withstand the abuse of auto racing. Increase your ride's handling ability with a Speedtech Performance USA Ackermann and bump steer kit. Notes: * Some kits are adjustable and include rod ends * Some kits include heim joints; others are for use with factory tie rods * Select the kit recommended for your vehicle application.

Not Yet Reviewed

$466.96

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$518.96

Speedtech Performance USA Tubular Upper Control Arms

Replacing upper control arms is one of the quickest ways to enhance the handling performance of your vehicle. Speedtech Performance USA tubular upper control arms are designed with improved geometry and Delrin bushings to help your car navigate the curves and corners. They're lighter, so the unsprung weight aids in acceleration. Heavy-duty ball joints and hardware are included to ensure long life under extreme conditions. The control arms are CAD-designed and constructed from CNC mandrel-bent 1.25 in. diameter and .120 in. wall DOM tubing. All components are laser-cut and CNC-machined for exact tolerances, TIG-welded, and then powdercoated gloss black. Speedtech tubular upper control arms come assembled complete with 304 stainless steel cross shafts, greaseable Acetron GP Delrin- type bushings, performance ball joints (including forged housings), full spherical pins and CV-style dust boots, urethane bump stops, and Grade 8 mounting hardware.

5.0 out of 5 stars ( 1 )

$676.00

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$826.80

Speedtech Performance USA Billet Tie Rod Sleeves

Offered as a high performance direct replacement for the flimsy and cumbersome factory sleeves, Speedtech Performance USA billet tie rod sleeves are designed to eliminate flex and the possibility of jumping threads. They are easier to adjust and they protect the tie rods from the elements--which typically cause factory sleeves to rust. Speedtech sleeves are CAD-designed and CNC-machined in-house, assuring quality and consistency in every set, and then black powdercoated for protection.

Not Yet Reviewed

$71.76

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$71.99

Speedtech Performance USA LSX Engine Adapter Plate Motor Mounts

Speedtech Performance USA LSX engine adapter plate motor mounts were produced for the top-performing and smooth-running power plant--the LS engine swap. They are a simple and effective way to install one of these engines in an older muscle car. These mounts are manufactured and CNC-machined from 6061-T6 billet aluminum and finished off in a classic black powdercoat for a long trouble-free finish. They are simple to install and an easy step to get your early model car up to late model speed.

Not Yet Reviewed

$156.99

Speedtech Performance USA Tubular Sway Bar Kits

Speedtech Performance USA offers tubular sway bar kits for a variety of classic car applications. They're available in different styles, such as: * For Factory Style Suspension: Larger, higher spring rate sway bars are among the easiest, most cost-effective ways to improve the cornering and handling performance of your Camaro or Firebird. Engineered specifically to fit the 1970-81 F-body GM subframe and leaf spring rear suspension, Speedtech sway bars utilize high-strength tubular DOM steel to maximize performance at up to half the weight of a solid bar. All bends are performed on computer-controlled tubing benders to provide consistent bends in a sway bar that fits right every time. Quality shows in the details, such as end treatments that taper smoothly from round to flat to eliminate stress risers, while ends are radiused for a clean appearance and better clearance. All sway bars come powdercoated gloss black and include all-new mounting hardware and bushings. * For Torque Arm Rear Suspensions: For most average Pro Touring Camaros seeing only occasional track days, the Torque Arm performs flawlessly even without a rear sway bar. For those who will hit the track more often and run either the Speedtech ExtReme front subframe or a fairly large sway bar on a Pro Touring or GM subframe, consider adding the Torque Arm rear sway bar kit to further enhance your car's handling. This bar is a frame-mounted, tubular type 7/8 in. bar that is 3-way adjustable for 138, 170, and 215 lb. spring rates—and is sized and shaped to clear the Speedtech torque arm assembly.

Not Yet Reviewed

$362.96

Speedtech Performance USA LT1/LT4 Motor Mount Adapter Plates

One of the best things about the world of Pro Touring is that it keeps our street cars up-to-speed with the latest technology better than any other part of the hot rodding industry. Helping you stay current with that technology, Speedtech Performance USA has developed universal LT1/LT4 motor mount adapter plates so that you, too, can have an LT1 or LT4 engine. The easy-to-install engine mount kits include everything you need to mount an LT engine to all the common GM muscle cars—with Energy Suspension polyurethane engine mounts and the necessary hardware for installation. These mounts are a direct bolt-in for cars that came original from the factory, with rubber mounts on the engine and solid stands on the frame. Cars with clamshell mounts on the engine and rubber mounts on the frame will need to convert to the solid frame stand mount style. * These engine mount kits are a "Universal" fit and may not be a direct bolt-in for all applications. Some applications may require minor modification to the frame stand configuration to install properly.

Not Yet Reviewed

$156.99

Speedtech Performance USA Steering Arms

Speedtech Performance steering arms have been custom-designed for use with Speedtech ATS front spindles. They are specially-created for additional clearance and better geometry for the steering system. Speedtech arms are made from quality materials and bolt directly to the ATS spindle.

Not Yet Reviewed

$466.96

Speedtech Performance USA Headers

Speedtech Performance USA headers are made from 304 stainless steel with big tube .065 wall CNC mandrel-bent primary tubes that fit perfectly without requiring dimpling for steering linkage clearance. Their long tube design provides awesome low-end torque and street performance with excellent ground clearance. Speedtech's internal collector Merge Spike technology promotes a more directional exhaust flow for better scavenging, increased power, and improved sound. The headers also feature CNC laser-cut flanges for an accurate fit; while the slip-fit collectors provide an easy-to-work-with seal. These replacements are available for a variety of 1960s and '70s era Chevy applications.

5.0 out of 5 stars ( 1 )

$1,766.96

Speedtech Performance USA AFX Performance Spindles

Looking for the ultimate set of performance spindles? Speedtech Performance AFX Performance spindles are here to get the job done! GM musclecars are known for having poor geometry from the factory. They rode relatively smooth and did well in straight line drag race situations, but high-speed cornering was less of a consideration in their designs. With today's technology, correcting these issues with control arms helps, but is only part of the equation. Speedtech and ATS have taken an entirely new approach to improving the less-than-optimal factory suspensions of the A, F, X, G and B body platforms by scratch-designing the focal point of the steering and suspension geometry: the front spindles. They will drop your ride height 1 in. for a more aggressive stance and lower center of gravity. Relocated steering arm mounting points are custom-designed for each individual vehicle to improve Ackerman and bring bump-steer numbers down to nearly zero. The spindles feature a Corvette ZR1 sealed, maintenance-free hub; it's heavy-duty, and the large bearing pack offers a stronger load capacity--able to handle the abuse of street and track driving. Speedtech Performance AFX Performance spindles and the ZR1 hub combination do not alter the factory track width or bolt pattern, allowing standard wheel fitment. Brake mounting is based on the C5/C6 Corvette and accepts factory Corvette brakes or packages from multiple manufacturers, including Baer, Wilwood, and others.

5.0 out of 5 stars ( 1 )

$1,454.96

Speedtech Performance USA Replacement Coilover Components

Speedtech Performance USA coilover replacement parts assist you in servicing your coilovers. Whether you need a bracket, an adjusting nut or a diaper pin—whatever you part needs, Speedtech Performance USA has the quality replacement parts to help you get the job done with confidence.

Not Yet Reviewed

$279.76

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$310.96

Speedtech Performance USA Transmission Mounts

Speedtech Performance USA transmission mounts feature steel and polyurethane construction to better support your transmission, reduce excessive movement, and absorb vibrations. For your performance application, choose Speedtech USA transmission mounts.

Not Yet Reviewed

$69.99

Speedtech Performance USA Complete Chicane Coilover Shock Mounts

The ability to properly set up the chassis and tune to individual track conditions is one of the basic fundamentals for achieving low lap times. Adjustable spring rate, ride height, and shock dampening is a vital part of that tuning process. True coilover shocks allow for all these to be done in one easily adjustable package, while avoiding issues where other coil and shock combinations fall short. Speedtech Performance USA created the complete Chicane coilover kit for a variety of Chevrolet, Buick, Oldsmobile, and Pontiac cars from the 1960s and '70s—so that coilover shocks can be installed and put to use in your factory frame! Designed to be welded in place of the factory upper shock mount, these kits convert the factory shock mount to a double sheer coilover mount for use with coilovers with a T-bar lower mount. Unlike other kits on the market, being able to make tuning adjustments without removing any components from the vehicle was a primary design goal for the Chicane coilover kit. It allows easy on-car adjustment of ride height, rebound, and compression. Since the factory upper control arm mounting bracket remains unaltered, engine removal is not a requirement for installation. Welding of the Chicane coilover kit is basic and straightforward—and can be completed by a certified welder within an hour. The complete kit includes QA1 double adjustable coilover shocks. Complete Chicane kit includes: * 2 weld-in double sheer laser-cut cages with formed stiffener plate * Coilover spacer * QA1 adjustable coilover shocks * Spanner wrench and thrust bearings * All necessary hardware

Not Yet Reviewed

$279.76

Speedtech Performance USA Coilover Conversion Kits

Speedtech Performance USA coilover conversion kits offer a better way to control ride height and suspension feel. These bolt-in kits use specially designed brackets along with QA1 double adjustable coilover shocks to provide on-the-fly adjustment for the ultimate in rear suspension tunability.

Not Yet Reviewed

$1,249.95

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$1,258.14

Speedtech Performance USA Tubular Control Arm Packages

Speedtech Performance USA tubular control arm packages provide a pair or lower and upper arms for your vehicle. Each arm is CAD designed and constructed from CNC mandrel-bent DOM tubing. All plate components are laser-cut and CNC-formed for exact tolerances, TIG-welded to the tubing, and then the assemblies are powdercoated gloss black. Speedtech tubular upper arms are assembled with strong and corrosion-free 304 stainless steel cross shafts, featuring a special offset machining process that allows two different base camber settings during alignment. Performance ball joints featuring forged housings, full spherical pins and CV-style dust boots are then installed and custom free-moving spherical bearing-mount sway bar end links wrap up the lower arms. Select the control arm package designed for your vehicle. Both upper and lowers receive: * Non-wearing greasable Delrin® bushings * Urethane bump stops * Grade 8 hardware Construction: * Upper arms are 1.25 in. diameter .120 wall tubing * Lower arms are 1.50 in. diameter .156 wall tubing

Not Yet Reviewed

$1,502.80

Speedtech Performance USA 1970-81 F-Body Street Fighter Front Suspension Kits

Transform your Camaro or Firebird into a true street and track performer with the Speedtech Performance USA 1970-81 F-Body Street Fighter front suspension kits, a complete front suspension upgrade engineered to deliver modern handling, responsiveness, and control. Designed to replace your factory subframe components, this system combines tubular upper and lower control arms, a Chicane coilover conversion with QA1 double adjustable shocks, ATS tall, forged spindles, and a performance sway bar to dramatically improve geometry, reduce unsprung weight, increase camber gain, and minimize bump steer. The result is sharper steering response, improved grip, and a more predictable ride, whether you're carving corners or cruising the street. With fully adjustable compression, rebound, and up to 2.5-inches of ride height tuning, plus durable Delrin bushings and compatibility with modern C5/C6 brake options, these kits deliver race inspired performance in a bolt-on package built for serious enthusiasts who expect more from their classic F-body.

Not Yet Reviewed

$5,067.66

Speedtech Performance USA Chicane Coilover Conversion Kits

Speedtech Performance USA Chicane coilover conversion kits are engineered to deliver modern suspension performance with the adjustability serious enthusiasts demand. Designed around a reinforced double-shear upper mount, the system converts the factory shock mounting arrangement to accept true coilover shocks, providing precise control over ride height, spring preload, and shock tuning. Unlike traditional spring and shock combinations, the included adjustable coilover shocks package key suspension adjustments into a single, compact assembly, making it easier to dial in handling, balance, and overall chassis performance for both street and track use. The design also allows convenient access to ride height and damping adjustments without extensive disassembly, helping reduce time spent in the garage and maximize time behind the wheel. Constructed from precision laser-cut components and reinforced for long-term durability, the Speedtech Performance USA Chicane coilover conversion kit provides a strong foundation for improved cornering response, enhanced vehicle control, and a truly customizable driving experience.

5.0 out of 5 stars ( 1 )

$1,135.42

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$1,166.62

Speedtech Performance USA Parts and Accessories