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Stifflers Suspension lower chassis braces dramatically increase the strength and stiffness of the front chassis area. Available for both factory and aftermarket K-members, this additional stiffness minimizes flexing to help maintain correct front suspension geometry while under load. The result is tighter steering response and more predictable handling under cornering and braking. Where applicable, Stifflers' lower chassis braces can be combined with their Spider braces (sold separately) to completely integrate the front and rear chassis sections for unprecedented car control. Features include: * Manufactured from high-strength tubing to maximize stiffness and strength while reducing weight * Design optimized using CAD/CAE software combined with real-world test data * Industrial-grade powdercoated for long life * Select models available that will work with aftermarket long tube headers * Includes hardware and rod ends (where applicable) * Depending on application, welding and drilling may be required
( 2 )
$119.95
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$189.95
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.
( 11 )
$298.52
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$299.99
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 )
$99.99
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
Replace your weak factory transmission tunnel braces with Granatelli heavy-duty G-load braces. Their unique design integrates an NHRA-approved driveshaft safety loop, reducing chassis flex and improving safety. Each system includes a heavy-duty G-load brace, a driveshaft safety loop, and all necessary hardware. Installation takes about 30 minutes using basic hand tools.
( 4 )
$123.59
The revolutionary G-Trac bars were developed by Steeda's SCCA road race team to stiffen the Fox body K-member and maintain proper suspension geometry in max-G cornering. Steeda manufactures these Trac bars from quality materials to ensure performance and durability. They include all hardware and instructions.
( 1 )
$74.95
QA1's tubular K-member for the 1982-1992 Chevrolet Camaro/Pontiac Firebird (F-body) is a significant front-end upgrade. Designed for reduced weight and increased clearance for headers and oil pans, QA1's K-members make a great upgrade for both street performance and track vehicles. QA1's engineers prioritized superior strength when designing these K-member components which reinforces the front-end unibody structure while optimizing weight savings. Unlike other K-members that lock you into a single setup, QA1 K-members offer unmatched versatility with their modular engine mounts (sold separately) that let you switch between engines and transmissions without needing a new K-member. No other K-member offers this level of adaptability, making QA1 the ultimate choice for a seamless build. The K-members offer the flexibility to be used with either coilover struts or QA1 spring sliders, depending on your performance goals. Coilover struts, like QA1's adjustable Proma Star Struts, can also provide a significant performance boost for your 3rd Gen Camaro or Firebird with the ability dial-in the perfect ride height. For those looking to achieve the perfect stance with greater negative camber, while accommodating wider wheels and tires, inboard spring sliders by QA1 are another great option. The inboard spring slider option also helps to maintain spring loads near the factory position on the QA1 K-member. Features and benefits: * Steel suspension subframe crossmember * High-strength design with powdercoat finish * The unique design of QA1's K-members allows the use of interchangeable engine mounts (sold separately) for easy engine swaps—choose from modular engine mounts (sold separately) that either allow you to reuse your existing small block engine and transmission combination or swap to a big block Chevy, or more modern LS and Gen V LT * Substantial weight savings—shedding 32 lbs. while increasing clearance and enhancing accessibility to the front of your car, this is an ideal upgrade! * Compatible with QA1' spring sliders or QA1's coilover struts (sold separately) * You can make your driveline swap even easier by using QA1's transmission crossmembers and torque arms (both sold separately) * Bolt-in installation—QA1's commitment to thoughtful product design is evident in their fully bolt-in kits, providing an easy installation process Fitment Notes: Must use QA1 lower control arms (sold separately). Not compatible with factory coil springs. Must use QA1 coilover struts or QA1 spring slider kit (both sold separately). Engine mounts sold separately.
Not Yet Reviewed
$699.95
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 )
$405.99
UMI Performance tubular K-members instantly remove 25 lbs. from the front of your vehicle, while maintaining strength for streetability and daily use. UMI Performance tubular K-members have been designed to handle everything from drag racing to daily driving and even autocross. Their dual tube center section adds increased strength over the competitors' designs, making them far superior and able to handle everyday stress and abuse. Additional front-end adjustment can also be achieved with these K-members. The lower A-arm slots feature a 1/2 in. adjustment built in and will work with the stock and any aftermarket A-arm setup. The front and rear A-arm slots also feature additional bracing to withstand hard side loads and extreme pressure. These tubular K-members also feature integrated motor mounts, eliminating the stock cast iron mounts for maximum weight savings. Additional features include: * Main center tube constructed from 1.500 in. x 0.120 in. seamless steel tubing * Additional cross braces use 1.250 in. x 0.120 in. seamless steel tubing * TIG and MIG-welded construction for superior strength * Front and rear A-arm mounts CNC-machined and fabricated from 0.188 in. thick steel * Rear A-arm mounts gusseted to withstand extreme side loads and pressure * Dual tube center section adds increased strength over any competitor's design * All mounting plates are CNC-machined to ensure hole-to-hole accuracy * Factory locator pins included for easy installation and exact fit * Completely fixture-welded to ensure factory fitment with no grinding or cutting
( 17 )
$699.99
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$1,566.96
Replace your heavy stock K-member with one of these tubular QA1 Mustang K-members and, in addition to the weight savings, you'll get better steering geometry, less bump steer, reduced dive under braking, and quicker straight-line performance. Ideal for street performance, autocross, pro touring or drag racing, they easily bolt onto factory components without any wheel or tire fitment changes. Features and benefits include: * All mounting points are digitally-indexed from new factory K-members * Made from high-quality, American-made, high-strength, low-alloy steel (HSLA) steel * Weighs only 25 lbs.--over 50 percent lighter than stock K-members * Increased header and oil pan clearance for easier maintenance and installation * Modular design for versatility--bolt-in engine mounts can easily be swapped for future engine changes * Improved geometry--maintains optimum anti-dive and minimizes bump steer with selectable rack height and optimal control arm positioning * Ideal for Mustangs with a lowered stance * Retain the factory wheel base Note: For best results, QA1 control arms are strongly recommended
( 31 )
$459.95
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$567.95
Stifflers Suspension stiffening rails are more than just a place to put your jack. Installed behind the rocker panel pinch-weld lip, these multi-taskers add strength and stiffness to your Mustang's chassis, as well as provide a safe and solid foundation for your jack. They are manufactured of 1 in. x 1.5 in. x .083 in. rectangular tubing for great strength-to-weight ratio for improved handling. Stifflers Suspension stiffening rails feature pre-masked areas for welding; this means no powdercoat to grind away, so the installation is quick and easy. They are a must for all track and lowered cars. Stifflers stiffening rails also feature: * Plastic end plugs to help keep moisture out * Industrial-grade powdercoat for long life, to outlast the vehicle * Added level of safety in event of side impact * Can be used alone or with Stifflers' Fully Integrated Technology (FIT) system
( 4 )
$94.95
Roadster Shop SPEC chassis kits offer Roadster Shop quality at an affordable price point. The SPEC Series is an engineering-focused approach, using the latest in manufacturing technology, to build the lightest, strongest, and easiest-to-install complete chassis systems. These technologies have been used to streamline procedures resulting in lower cost and shorter lead times. The SPEC independent front suspension is engineered to deliver outstanding performance in a user friendly package. It features proprietary suspension geometry designed to provide the best balance of ride quality and performance in its class. Available as On-The-Shelf, pre-configured chassis or custom specifications to suit your needs. Features and benefits of Roadster Shop SPEC chassis kits include: * Full-chassis performance at a smaller component price * Unparalleled quality * Add the strength of a full frame with no floor modifications on most applications * CNC laser-cut, TIG-welded, and contoured "Laser Rails" frame rails * No kinks, bends, or stressed areas that are prone to flex like mandrel-bent tubing * Stronger, lighter, and more precise * CNC-located factory mounts built into the frame for easy, vehicle specific installation * Frame rails accommodate mini-tubs and wider wheels * Aggressive ride heights for the modern pro-touring look * Choice of coilover or air suspension for many applications * Air suspension chassis will lay the rockers on the ground (varies with tire size) * Truck rear frame rail kick ups engineered for minimal bed modifications while allowing rockers to lie on the ground * Crossmembers and chassis bracing allow 3 in. exhaust * Adjustable, drop-out transmission mounts (tunnel mods may be necessary for larger T-56 and 4L80 transmissions) * Vehicle specific body (cab and bed on trucks), bumper, and core support mounts * Single-adjustable billet coilovers * Power rack and pinion steering * Easy-to-adjust upper A-arm eccentric mounts for fast and accurate alignments * Wilwood Pro Spindles * Parallel 4-bar rear suspension * Ford 9 in. housing with 31 spline axles * Optional mounts, coilovers, sway bars, brake packages, and rear-end gearing available on custom-order chassis * 5 x 4.75 wheel bolt pattern * Frames are shipped as bare steel
( 14 )
$20,375.99
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$20,649.99
On Sale
Upgrade your tunnel brace to improve rigidity and increase clearance to fit larger exhaust systems. Factory stamped steel tunnel braces unfortunately leave much to be desired. APR has redesigned these 6061 aluminum braces to sit slightly lower in the tunnel to allow for larger exhaust tubing. As an added benefit, the CNC-bent laser-cut braces add additional structural rigidity to the chassis! Tunnel brace model EXH0321 fits C7 chassis A6/7, S6/7, RS6/7.
Not Yet Reviewed
$109.95
$60.95
UMI Performance tubular K-members instantly remove 25 lbs. from the front of your vehicle, while maintaining strength for streetability and daily use. UMI Performance tubular K-members have been designed to handle everything from drag racing to daily driving and even autocross. Their dual tube center section adds increased strength over the competitors' designs, making them far superior and able to handle everyday stress and abuse. Additional front-end adjustment can also be achieved with these tubular K-members. The lower A-arm slots feature a 1/2 in. adjustment built in and will work with the stock and any aftermarket A-arm setup. The front and rear A-arm slots also feature additional bracing to withstand hard side loads and extreme pressure. Additional features include: * Main center tube constructed from 1.500 in. x 0.120 in. seamless steel tubing * Additional cross braces use 1.250 in. x 0.120 in. seamless steel tubing * TIG and MIG-welded construction for superior strength * Front and rear A-arm mounts CNC-machined and fabricated from 0.188 in. thick steel * Rear A-arm mounts gusseted to withstand extreme side loads and pressure * Dual tube center section adds increased strength over any competitor's design * All mounting plates are CNC-machined to ensure hole-to-hole accuracy * Factory locator pins included for easy installation and exact fit * Completely fixture-welded to ensure factory fitment with no grinding or cutting
Not Yet Reviewed
$699.99
Scott Drake Monte Carlo bars present high performance developed by Carroll Shelby. Designed to stop shock tower flex and maintain proper wheel alignment during hard cornering, the extra support of these braces will also help prevent shock tower stress cracks. Monte Carlo bars are copied from the original design and feature thicker diameter tube, plus improved fender brackets. Scott Drake has stamped square holes in the top of each fender bracket to allow for the use of lower-profile carriage bolts. You may choose options of curved or straight in steel construction—and a choice of finishes, or stainless steel. They also offer curved race versions that feature .975 in. diameter tubing and are equipped with Heim joints for smoother operation. Order the shock and strut brace designed for your specific vehicle application.
( 52 )
$53.49
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$141.95
The 3rd Gen Camaro and Firebird are known for having a weak and flexible steering box area. To address flex and improve handling, a steering brace, also known as the Wonder Bar from QA1, is available. These tubular components bolt directly above the front sway bar, tying the front subframes together. Installing a QA1 Wonder Bar helps stiffen the front frame, reducing stress on this weak point. This translates to improved steering response to your vehicle with benefits like sharper handling, improved cornering, and overall better vehicle performance. Features and benefits: * Tubular construction strengthens the front chassis * Thoughtful design—the QA1 Wonder Bar installs cleanly between the sway bar and frame rails, maintaining a factory appearance without compromising ground clearance * Bolt-in installation makes the upgrade hassle-free Fitment Notes: Please be aware that 1982-1984 cars may need to slot existing mounting holes.
Not Yet Reviewed
$99.95
BMR Suspension K-members feature a unique tubular design that will allow you to drop the weight on your front-end by more than half of the factory piece. They provide a lightweight alternative, while offering larger tubing for durability. BMR K-members also provide more clearance for aftermarket headers and turbo systems. They will work with stock or aftermarket A-arms (except where noted), providing an additional 1/4 in. adjustment, equaling up to 4 more degrees of camber.
( 24 )
$1,169.00
BMR steel chassis steering braces are designed to tighten the front subframe assembly of your Camaro or Firebird and strengthen the steering box mounting area. They're an absolute must for any third generation F-body! BMR's steering braces will improve your steering response and handling. They come available in a black hammertone or red powdercoated finish.
( 2 )
$59.95
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