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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 )
$509.95
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$629.95
Ridetech subframe connectors add rigidity to your vintage vehicle's chassis and improve performance by reducing chassis flex. Modern tires and aftermarket suspension components are pushing the limits of OEM chassis designs. Ridetech's subframe connectors offer simple bolt-on reinforcement to significantly increase the performance of the chassis and dramatically transform the handling and ride quality. Connectors are fabricated from 1.5 in. x 3 in. x .125 wall steel for high strength, then bathed in a durable powdercoat finish for long-lasting, high-quality appearance. Order the pair recommended for your muscle car application.
( 11 )
$625.00
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$695.00
Make your race car track-safe with Allstar standard roll cage kits. They include all of the bars--1 3/4 in. diameter mild steel tubing and .095 in. wall--to form a protective cocoon. Roll cage kits have driver doors with four curved bars, and a "Z" type right side door and gussets are included. Fast lap times are great, but a safe car, hopefully, lets you walk away to race another day. Reinforce your racer with Allstar standard roll cage kits.
( 16 )
$549.99
One of the most effective ways to improve the stiffness and handling of your vehicle is to box the factory chassis. Hellwig Frame FX kits makes it easy for you. Rather than taking considerable time with measuring, cutting, and fitting steel panels these kits simplify the process effectively. Some vehicles have an open C-channel chassis that's only 3 in. wide at the top and bottom. This design is inherently weak in handling torsion and marginal in bending. Frame FX kits double the width of the tension side of the frame rail and close the area for dramatic increases in torsional and bending stiffness. They're comprised of 14 pre-cut 10-gauge steel panels matching the thickness of the factory frame--and fit into the weak points of the factory chassis. Hellwig engineered another panel that adds an extra mount to tie the floor to the chassis, furnishing even more strength to the entire car. In addition, brackets are provided to mount the transmission crossmember, with enough adjustment to accommodate nearly any drivetrain configuration. The increased strength via Hellwig Frame FX kits results in improved handling and ride quality, while retaining the factory chassis and mounting points.
( 20 )
$693.99
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$765.99
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 )
$539.10
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$719.99
Auto Metal Direct makes heavy-gauge steel rails designed to fit perfect and weld-in easily since they are superior reproductions of the factory original. Frame rails can become weakened by rust, attempts at pushing or towing, or damaged due to an accident, which can adversely affect other chassis components and make your vehicle unsafe to drive. Don't compromise your vehicle—or safety—with cheap replacement parts. For quality parts and components that you need for your classic vehicle, trust the pros at AMD.
( 3 )
$529.99
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$599.99
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
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 )
$519.95
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$719.95
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 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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$749.99
BMR subframe connectors are some of the strongest in the industry. Their innovative design ties together key structural points across the floorpan, minimizing flex. BMR subframe connectors are fabricated from heavy-duty, rectangular tubing for frame rigidity and improved handling ability.
( 65 )
$519.95
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$659.95
Lose some weight and gain some space with AJE Suspension Mustang tubular K-members. With steel components, your Mustang's front-end will receive K-member suspension technology to make your car that much better than stock. Available with or without engine mounts, AJE Suspension K-members are powdercoated black for exceptional, lasting good looks and will work with factory A-arms and springs with bolt-on perches. Remove some weight and add some strength to your pony with aftermarket AJE Mustang tubular K-members.
( 43 )
$535.99
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 )
$585.27
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$619.99
These Summit Racing™ frame rail and subframe connector Pro Packs will help to firm up your rear suspension for optimum traction control. They include a set of 2 in. x 3 in. steel formed rear frame rails and a set of weld-on subframe connectors. Put the maximum horsepower to the ground with one of these Summit Racing™ frame rail and subframe connector Pro Packs.
( 2 )
$601.98
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$616.98
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 )
$569.95
Steer Smarts delivers their most extreme steering linkage--Yeti XD Series linkage equipped with their Griffin XD attenuator. They applied 85 years of steering "lessons learned" to develop the strongest most durable linkage ever built for a Jeep. Adding a top-mounted drag link to your Jeep was a daunting task, to say the least. But Steer Smarts patented reverse taper mount changed that, making the task a simple process. Steer Smarts YETI XD drag links are completely bolt-on—even the top-mount links, installing in just minutes, bolting to the factory tapered knuckle hole and the factory pitman arm hole. Steer Smarts Yeti XD drag links with Griffin XD attenuator are available in bottom-mount or "No Drill" top-mount versions with red or black bellows. Select the drag link designed for your Jeep. Features: * Yeti XD/Griffin XD assembly: -- Easy bolt-on installation -- Engineered for proper clearance with chassis components, eliminating interferences * Ball joints: -- 30mm 2 1/2-ton ball joints designed specifically for specific Jeep model -- Cold headed medium carbon alloy steel ball studs provide incredible impact toughness for extreme duty usage -- Induction heat-treated ball studs provide ultimate fatigue strength and superior off-road durability -- Steel-on-steel bearings provide exceptional ball joint wear resistance and robustness -- High-quality seals ensure long ball joint life and are rigorously tested to minimize leakage between grease service intervals, improving ball joint reliability -- Fully greaseable * Drag link ends: -- Powdercoat over e-coat for a long-lasting appearance under harsh conditions -- External threads are e-coated for durability and long term serviceability -- Forged from medium carbon high-hardened steel and heat-treated for even greater buckling, impact, and fatigue strength. -- Large 1 1/4 in. rolled threads at tie rod adjuster and drag link ends provide significantly increased strength over the original equipment threads -- Unique "reverse pin" technology built into the socket prevents linkage from flopping or rocking * Griffen XD attenuator: -- Reduces harsh and negative feedback to your steering wheel -- Drag link adjuster is manufactured from large diameter 1/4 in. thick wall high-strength 4130 chromoly steel tubing for maximum buckling strength -- Adjuster clamps ensure proper clamp force using conventional tools without the possible risk of loosening like large jam nuts -- Designed with right-hand and left-hand threads for quick and easy adjustment when installed on the vehicle -- Internal threads and tube are also e-coated for long term serviceability
( 1 )
$699.00
Summit Racing™ offers a wide selection of high-quality bulk round tubing to assist with many fabrication projects. After all, the key to any successful car build is having access to quality, reasonably priced parts to help you get the job done right. Sold in pre-cut lengths, Summit Racing™ bulk round tubing is available in both D.O.M., mild steel, and chromoly. Choose what you need in length, diameter, and thickness to best suit your project needs.
( 3 )
$508.20
It's a known fact; during acceleration, cornering, and braking your chassis will flex and twist. The more power you add or the stiffer the suspension, the worse it becomes. All this movement uses up valuable horsepower, decreases handling characteristics, and reduces ride quality. So why spend time and money improving your engine and suspension when it's attached to a flaccid frame? Stifflers Suspension F-150 chassis stiffening systems bridge the front and rear sections of the F-150 frame to significantly increase its stiffness and reduce the twisting and bending caused by suspension inputs and drivetrain torque. The systems are designed for ease of installation with minimal drilling--all other mounting locations use existing holes. Stifflers F-150 chassis stiffening systems are complete with integrated brackets for optional driveshaft safety loops (sold separately). So what does this mean for you? * Straighter launches * Less wasted horsepower * More responsive suspension tuning * Improved handling under cornering and braking * Better ride quality * Fewer squeaks and rattles NOTE: Other manufacturers' long bars cannot be used with these systems.
Not Yet Reviewed
$549.95
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 )
$608.95
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 )
$567.95
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$593.95
UMI Performance Road Race K-Members are designed for serious racers who expose their vehicles to more stress than any street cars will ever experience. Using an additional 1.000 in. of tubing, UMI Performance Road Race K-Members tie together crucial areas. They weigh in at 3 lbs., more than UMI's standard version, but still maintain a much-needed weight savings.
( 3 )
$819.99
First and second generation F-bodies use a subframe that can flex during hard cornering, altering your suspension geometry and even your alignment. The problem solvers at Hotchkis offer Chassis Max handle bars as the solution. Triangular-shaped handle bars tie the control arms to each other or the cowl to the firewall with high-strength tubing, CNC-bent brackets, and laser-cut gussets (in first generation F-bodies) for maximum strength and rigidity. They are computer-designed for superior fit, fabricated from 1.5 in. steel tubing, TIG-welded for strength, and powdercoated with an anthracite finish for durability. Make the most of your high performance suspension and experience incredible handling and driver control in your street machine when you install Chassis Max handle bars from Hotchkis Sport Suspension.
( 16 )
$503.10
TCI transmission crossmembers are available for a range of classic vehicles. They feature all-steel construction for maximum strength and durability with less weight than factory parts. Designed with the do-it-yourselfer in mind, TCI crossmembers offer an innovative 3-axis modular design that is adjustable for optimal fitment across a range of applications. Most models also use the original bolt holes, so crossmember installation has never been easier. A powdercoated finish resists scratches and rust and provides a clean, finished look.
Not Yet Reviewed
$538.95
Rust Buster comes in with a solution better than the Factory OEM crossmember. The spare tire crossmember is a crucial component designed to enhance the structural integrity of your vehicle's rear frame, ensuring that your spare tire is securely held in place. This repair piece serve as a faithful OE replacement, preserving the authenticity of your vehicle's design while elevating its overall structural integrity. Designed as a bolt-on part, installation is straightforward and hassle-free. Each crossmember is meticulously engineered and features mounting location holes that are slotted for optimal fitment for the perfect blend of strength and durability. For added protection against rust and corrosion, this support piece comes with a rust-preventative oil coating, ensuring your investment stands the test of time. Drive with confidence, knowing your spare tire is securely supported with the quality and precision of a spare tire crossmember by Rust Buster. Order the model for your make/model.
Not Yet Reviewed
$599.99
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$679.99
Make your IFS stock upgrade a natural conversion with Heidts Mustang II crossmember kits. They are precut and pre-fitted, so you'll have no measuring, no grinding, no trimming, and no mistakes! Heidts crossmember kits are ready to install when you are. Main crossmembers are constructed from only two formed pieces for maximum strength with an accurate fit and feature the strong design of vertical inner uprights offering twice the weld area to keep your frame from twisting. Crossmembers and spring towers with built-in anti-dive are pre-welded to fit your frame and one-piece shock cups are TIG-welded in place. Kit components may vary by application, but most include all of the special, hard-to-make brackets and mounts that you need to complete the install. Heidts kits retain the original suspension to give you the correct design, correct camber action, and no bump steer! Everything is pretty much done but the installation--that, you'll have to do yourself! But never fear--Heidts Mustang II crossmembers include a step-by-step, fully-illustrated instruction book to walk you through your install.
( 8 )
$591.00
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