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Hotchkis Sport Suspension Convertible X Brace supports will add rigidity to your vehicle's chassis by replacing the factory frame brace. As an added benefit, they also allow for the use of larger-tube exhaust systems, which will often require the removal of the factory brace anyway. These fabrication-designed braces feature extra reinforcing gussets and a laser-cut HSS logo. Get your fabrication on with an assist from Hotchkis Sport Suspension Convertible X Brace supports!
( 16 )
$299.99
Hotchkis Sport Suspension weld-on subframe connectors strengthen the chassis of your unibody to increase cornering and straight line performance. They're engineered to provide maximum ground clearance, while reducing annoying rattles and squeaks.
( 51 )
$719.99
Reduce overall chassis flex on your musclecar with the addition of Heidts subframe connectors. They will improve your chassis's integrity and provide a solid foundation for the rest of your performance enhancements. Don't let your musclecar get out of shape. Keep it solid and fit for the winding road ahead with Heidts subframe connectors.
( 7 )
$322.00
Heidts bolt-on subframe connectors are carefully formed to fit the contour of your stock floor. They require no cutting or welding (but can be welded, if you wish) to install, allowing you to retain your stock exhaust, fuel, and brake lines. Heidts connectors are powdercoated black to insure long life and good looks. They come complete with Grade 8 hardware and instructions. Preserve the consistency and performance of your Uni-body chassis with Heidts subframe connectors.
( 12 )
$322.00
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$386.00
UMI Performance bolt-on 3-point subframe connectors increase chassis stiffness, performance capabilities, and overall drivability. Their setup is designed to tie the front and rear subframes together, adding additional cross-bracing throughout the center of the vehicle and protecting it to its fullest, while keeping ground clearance issues to a minimum. This spider web effect greatly improves your car's handling ability, while reducing T-top squeaks, dash rattles, and quarter panel flexing. They are designed for autocross, road racing, and drag racing setups. Connecting the front and rear subframes together allows for better weight transfer, improved traction, and straighter launches. Additional features include: * Constructed from 1.750 in. x 0.120 in. DOM mild steel tubing * 3-point brace uses 1.250 in. x 0.095 in. DOM mild steel tubing * Front mounting points feature 0.250 in. thick mild steel mounting plates * Mounting plates feature precision CNC-machining to ensure tolerances * MIG-welded construction * Durable powdercoated finish
( 10 )
$499.99
The more improvements you do to the vehicle, the more demands are put on the body. These Global West subframe connectors provide additional support to increase the integrity of the chassis. They are a must for any performance application. They're built out of round 1 5/8 in. x .125 in. wall roll cage tubing. The construction attaches to the factory support rails located directly under the front seats. The rear portion of the subframe attaches to the rear leaf spring mount and frame rail. Additional gussets are included in the kit, which add support to the rear spring mount. Welding is required for installation.
( 97 )
$225.72
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$350.75
Make lifting your vehicle a breeze with Steeda Ultra-Lite jacking rails. These lightweight systems are made in-house from sturdy CAD-designed, laser-cut, high-strength steel and feature a durable finish. They're available as weld-in or a simple bolt-in design that can be removed at any time using factory mounting holes. The rails are offered in different lengths to help with your strengthening needs. They allow you to jack up your car with confidence anywhere along the rail, preventing damage—and also function as undercarriage protection if you are riding lowered. The rails add strength and function to your vehicle and make putting your car up on stands quick and easy.
( 26 )
$179.99
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$249.95
Save money over the dealer price with Goodmark transmission crossmembers. Made from steel, they will provide the proper support, along with a matching fit and performance to that of the original being replaced. Choose the one designed for your vehicle. Restore and/or repair your classic vehicle with "the original mark of quality"—Goodmark.
( 2 )
$116.99
Replace your broken, damaged, or missing rear wheelhouses with these OER wheelhouses. They are manufactured from stamped steel and have a special EDP coating applied to help resist rust and corrosion. The wheelhouses are available for both the driver and passenger sides, and both inner and outer versions. The OER wheelhouses are built to factory specifications, so you know they're designed to fit your vehicle correctly.
( 2 )
$236.99
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$244.99
The 1967-69 F-body was designed in an era when high performance driving and modern tire technology weren't as prevalent. Their unibody chassis, while innovative at the time, can flex and twist under stress, particularly when cornering aggressively or accelerating hard. QA1's bolt-on subframe connectors offer a simple and effective solution to this common issue. They tackle the flex issue by increasing frame rigidity, leading to a significant improvement in handling performance—especially during cornering, acceleration, and braking. The tubular design connects the front Camaro/Firebird subframe to the rear subframe, providing additional structural support and stiffness to the chassis. Additional details: * Included solid body mounts and hardware further reduce chassis flex. Their aluminum construction offers a noise-free alternative to polyurethane. * Thoughtful design: The QA1 subframe connector contours to follow the body lines for a factory-like look without sacrificing ground clearance. * Easy bolt-in installation makes the upgrade hassle-free. * Fitment notes: Does not fit convertibles.
( 1 )
$535.95
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$589.95
Detroit Speed weld-on subframe connectors join your front subframe and rear frame rails to increase your car's stiffness. These uniquely designed DSE connectors are fabricated from thick-wall rectangular steel tubing. They are bent and TIG-welded in a fixture for accuracy and repeatability. Unlike others, these DSE subframe connectors are barely visible from underneath the car, offering maximum ground clearance. Plus, they won't interfere with seat attachment hardware or the installation and removal of the rear leaf spring pocket. And, your molded factory carpet will still fit over the subframe connectors. Detroit Speed weld-on subframe connectors can be installed on convertibles and are supplied with templates, pictures, and detailed instructions for installation.
( 1 )
$283.95
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$608.95
California Pony Cars AOD conversion installation kits are designed to convert your 289/302/351W engine from a C4 or C6 transmission to an automatic overdrive transmission. Order the kit designed for your Mustang year/application. AOD conversion installation kits include: * Crossmember * Trans-mount insulator * Slip yoke * Kick-down cable * Flexplate * AOD shift linkage * Throttle return spring bracket on select kits Note: California Pony Cars AOD conversion kits do not include actual AOD transmission and may require additional parts.
( 5 )
$731.99
On Sale
Stifflers Suspension Mustang FIT (Fully Integrated Technology) systems offer a proven way to keep your Mustang's muscles fit! The FIT system integrates the front and rear subframes and ties them into the rocker panels to form a triangulated web of strength and stiffness that helps keep your car in shape for improved handling, launches, and ride quality. The strong steel stiffeners beef up your Mustang for an increased range of suspension tuning and overall performance. Twisting and bending is good conditioning for humans--not vehicles. The best exercise for your Mustang is Stifflers FIT system. Stifflers Mustang Fit System benefits include: * Transfers more power to the ground, not wasting it twisting and bending the chassis * Launches straighter * Stiffer chassis reduces or eliminates interior rattles and extends the life of the vehicle * Weld locations are free of powdercoat--no removal of powdercoat required before installation * Non-intrusive design; no floors to cut, interior to remove, or lines to relocate * Tube ends are sealed to keep out moisture * Ground clearance remains unchanged * Increases side impact safety * Can be used with factory convertible braces with only slight modifications
( 3 )
$354.95
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$569.95
$319.46
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$512.96
When converting from a 6-cylinder engine to a V8, extra crossmembers are a must. OER Authorized has designed these heavy-duty steel engine crossmembers to mount and support a V8 engine in early model hot rods or trucks. The 3-piece sets mount between the frame rails for a perfect fit. Order the model recommended to fit your application.
( 1 )
$92.99
OER Authorized bolt-in IFS conversion kits are available for 1947-54 GM pickups with a V8 engine. The kits will improve your vehicle's ride, handling, and performance. These steel crossmember kits convert your antiquated stock front suspension and steering box to a more modern 1974-78 Mustang II or 1974-80 Pinto/Bobcat setup. Enjoy better handling with the addition of rack and pinion steering and twice the suspension travel when compared to stock. Combine this advancement in steering and suspension with the added benefit of modern braking power, and this setup becomes a no-brainer. The bolt-in kit is designed for use on 1947-54 Chevy 1/2 ton or light-duty 3/4 ton frames, and will drop the ride height approximately 2 1/2 to 3 in. using stock Mustang II front spindles. Lower control arm pivot tubes and gussets are not included in this kit. (A weld-in crossmember it is also available, if preferred.) Specs: * Bolt-in components. No welding required * Proven Mustang II geometry * Can use stock 1974-78 Mustang II or 1974-80 Pinto suspension components, except control arms. * Requires tubular control arms (strut-less style lowers) * Interlocking bolt-in boxing plates reinforce frame for strength * Requires power steering rack * Stock spindles will drop ride height 2-1/2" - 3 inches * Will work with small block or big block Chevy engines * Not for use with air-ride front ends Note: Additional items may be needed to complete installation, including but not limited to tubular control arms, spindles, coilover springs/shocks, rack and pinion steering, tie rods, calipers, rotors, inner tie-rod extensions. Important: Lower control arms need to be level with the ground (with all the weight on the vehicle) for correct steering geometry.
( 1 )
$404.99
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.
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$319.99
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$332.99
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
( 69 )
$199.99
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$979.99
Steeda "Stop the Hop" Street Starter kits help you eliminate wheel hop and stay within your budget. These kits contain the best three components to rid your Mustang of this menace, provide the fundamental foundation for ultimate traction and suspension compliance, and address the issues with factory IRS subframe mounting. Want to "Stop the Hop"? Get a Steeda Street Starter kit. Kit components: * IRS subframe alignment dowel kit -- Fills the factory bolt hole voids with CNC-machined Delrin® inserts that will square up the rear subframe to the chassis and limit side-to-side and front-to-back movement of the subframe that is present under hard acceleration and braking. * IRS subframe bushing support system -- Patented 8-piece kit designed and made in-house from billet 6061 aluminum and features stainless steel hardware. Fills all the factory voids in the IRS subframe mounting locations, preventing up-and-down movements of the subframe. * IRS subframe support braces -- Made in-house from chromoly steel, these 5-point braces with a simple bolt-in design support the factory subframe by directly tying it into the chassis at key mounting locations, utilizing factory mounting locations on the factory frame. They support the front factory mount and the lower control arm mount as well. Kit benefits: * Eliminate wheel hop while not increasing NVH * Eliminate subframe movement * Simple installation * Squares subframe to the chassis * No permanent modifications
Not Yet Reviewed
$599.95
On Sale
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
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$449.95
$399.95
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$403.95
UMI Performance front reinforcement braces reduce squeaks and rattles common with the GM G-body platform. This welded steel tubing will stiffen the front frame horns and front crossmember area, and no drilling is required for installation. Grade 8 hardware is included to easily bolt the triangular brace onto your chassis. UMI front reinforcement braces are designed and manufactured with pride, and are available in your choice of powdercoat colors.
( 12 )
$277.99
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$294.19
California Pony Cars conversion transmission crossmembers offer strength for your performance driving. CPC manufactures crossmember bars from .090 wall tubular steel--with and without parking brake brackets. They're TIG-welded for maximum strength and powdercoated for a lasting finish. CPC can also provide you with conversion crossmembers in direct bolt-on kits to take your 2-speed to a later 3 or 4-speed with no modification to the unibody, while still allowing easy access for removal of transmission pan. These crossmembers are available for use with dozens of transmission models and numerous Mustang applications from the 1960s and '70s.
( 12 )
$149.95
Doug's Headers offers engine swap transmission crossmembers for a variety of classic Chevrolet and GMC applications. They are CAD-CAM designed, welded steel with a durable black powdercoat finish for proper fit, strength, and appearance. Ideal for 2WD trucks with GM LS and LT engines, one part number fits with ALL popular late-model manual and automatic transmission swaps. The crossmembers come complete with necessary hardware and detailed instructions. Notes: * Designed to clear up to 3 in. exhaust systems with no loss of ground clearance * Designed for use with Doug's Headers line of LS engine swap products
( 5 )
$335.25
UMI Performance tubular front steering braces, also known as the Wonder Bars, are designed to tie the front right and left subframes together. UMI Performance tubular front steering braces bolt directly under the front sway bar, stiffening the front frame and resulting in improved handling, cornering, and overall performance. The steering braces strengthen the chassis, taking stress from the steering box area, which is well known as a weak area on any third-generation F-body. The steering braces are constructed from 0.250 in. 1018 mild steel CNC-machined mounting points and 1.250 in. DOM steel tubing with a 0.120 in. wall that is fully MIG-welded for extreme strength and lasting performance.
( 38 )
$98.94
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$99.99
On Sale
Stifflers Suspension web braces tie together their full-length subframe connectors and stiffening rails, creating the ultimate in chassis stiffening! A key component in their 1979-2004 modular FIT Systems, these individual black powdercoated steel frames provide a structurally engineered web network for additional strength and stiffness. Their installation is easy with the included Slide-2-Size mounting brackets. Stifflers Suspension web braces feature: * Slide-2-Size mounting; simply slide bracket into place and weld, for a custom fit every time * Design optimized using CAD/CAE software combined with real-world test data * Made of 1 in. x .065 in. tubing to maximize stiffness and strength while reducing weight * TIG-welded for superior strength * Considerably increased side impact safety * Works with any aftermarket square or rectangular full-length subframe connectors * Engineered for no loss of ground clearance and no need to relocate fuel or brake lines * No floors to cut or interior to remove * Pre-masked areas for welding require no removal of powdercoat before installation * Industrial-grade powdercoated for long life
( 2 )
$284.95
$256.46
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