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Chassis Components - Frame Brace, K-Members & More
Showing In Stock Items. Show All 54 Items.
Summit Racing™ Quick Removal Flanges
Summit Racing™ quick-removal flanges allow you to make almost any tubular part of your car removable. These flanges weld in place of a sectioned tube, enabling you to easily unbolt that tube and reinstall it—for example, a transmission crossmember. Laser-cut from .250 in. steel and included with Grade 8 fasteners, the flanges are available in multiple sizes from 1 in. to 1 5/8 in.
( 4 )
$21.99
Rhodes Race Cars Quick Removal Rectangular Flanges
Rhodes Race Cars quick-removal rectangular flanges are specialized steel plates used in drag racing and performance cars to easily and securely attach tubular chassis components (like subframes, engine mounts, or suspension parts) to the main frame. They feature bolt holes for quick assembly/disassembly (often 4-bolt patterns), allowing for fast maintenance, upgrades, or removal of sections without cutting—meeting NHRA standards for strength. Available in multiple thicknesses and a dozen tubing diameters. Key characteristics and purpose: * Quick removal: Designed for fast disconnection, saving time during construction or repairs * Rectangular shape: The specific shape of the plate for connecting square or rectangular tubing * Chassis mounting: Used to mount accessories, suspension components, or crossmembers to the car's chassis * Strong and durable: Made from 3/16 in. thick steel with Grade 8 hardware (nuts/bolts) for high strength * Laser-cut for specific tubing diameters (i.e, 1 in., 1 1/8 in.) * NHRA Approved: Accepted for use in sanctioned drag racing events * How they work: You weld one flange to the end of your tube (e.g., a transmission crossmember) and another to the chassis; then, you bolt them together with the provided hardware, creating a strong, detachable joint. In essence, the flanges are strong, race-legal connectors for modular chassis building.
Not Yet Reviewed
$29.95
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$39.95
Rhodes Race Cars Quick Removal Square Flanges
Rhodes Race Cars quick-removal square flanges are weld-in steel plates with four bolt holes, used in race car chassis building to easily detach components like transmission crossmembers or suspension parts. They feature a square design for 4-bolt patterns and are sized to fit specific tubing diameters (i.e., 1 1/4 in., 1 3/8 in.) for fast assembly and disassembly. Available in multiple thicknesses and a dozen tubing diameters. How they work: * Weld-In: One flange half is welded to your main chassis structure, and the other half is welded to the removable component (like a crossmember). * Quick-Release: When you need to remove the part, you simply unbolt the two flange halves, allowing for quick maintenance or adjustments without cutting or complex dismantling. * Standardized Sizes: Available for common tubing sizes (like 1 1/4 in. or 1 5/8 in. O.D.) and bolt patterns, ensuring a precise fit for many applications. Key features: * Material: Typically 3/16 in. or 1/4 in. thick steel * Design: 4-bolt square pattern * Purpose: Saves time during construction and makes servicing easier, often used for transmission crossmembers
Not Yet Reviewed
$29.95
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$39.95
Rhodes Race Cars Quick Removal 2-Bolt Flanges
Rhodes Race Cars quick-removal 2-bolt flanges are specialized steel tabs/brackets used in race car fabrication for easily attaching and detaching chassis components. They feature two bolt holes for secure, yet fast, assembly/disassembly, saving construction time. The flanges are made from 1/8 in. steel, fit various tubing sizes (like 5/8 in. or 3/8 in.), and come with bolts—allowing builders to quickly mount suspension parts, accessories, or tubes that need frequent removal. Available in multiple thicknesses and more than a dozen tubing diameter options.
Not Yet Reviewed
$29.95
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$39.95
Silver Sport Removeable Transmission Crossmember Kits
Upgrade your chassis with a Silver Sport removable transmission crossmember kit, designed for 1963–79 C2 and C3 Chevy Corvettes. The innovative kits transform the factory welded-in crossmember into a convenient bolt-in design, allowing for easier installation, removal, and access to your drivetrain. Perfect for restoration projects, performance builds, or transmission upgrades, these crossmember kits provide enhanced support and rigidity while simplifying maintenance and modifications. Each part meets high-quality standards for durability and fit.
Not Yet Reviewed
$99.00
DC Sports Upper Strut Bars
DC Sports front and rear upper strut tower bars work in conjunction with the factory suspension to strengthen the chassis by joining the two shock towers together. This helps to eliminate the flex created by performance driving, while improving the car's feel and handling. An easy-to-bolt-on design, which includes all necessary hardware and instructions, makes them a prime choice for your ride.
( 10 )
$142.50
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
$337.99
Rhodes Race Cars Chassis Tabs
Rhodes Race Cars offers a wide selection of chassis tabs and welding brackets that are available in multiple configurations to suit your specific needs. These flange connections give you mounting points to easily install accessories on your chassis or suspension, saving you time during car construction.
Not Yet Reviewed
$1.49
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$4.99
On Sale
Steeda Ford Mustang Rear Chassis X-Braces
Steeda Ford Mustang rear chassis X-braces reduce deflection and improve your suspension performance. They're crafted in-house from strong chromoly alloy steel tubing, then further reinforced with a billet aluminum center cover plate. The X-braces are powdercoated to resist the elements and provide long-lasting rigidity to your undercarriage. These units distribute loads more efficiently between your rear shocks, springs and the chassis—providing increased handling and cornering, while curbing rattles and squeaks. Most—but not all—models require a rear seat delete, and you can secure the braces easily with either a bolt-on or welded installation. Order the Steeda rear chassis X-brace designed for fitment on your Ford Mustang submodel.
( 4 )
$299.95
$248.78
AJE Suspension Mustang Tubular K-Members
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.
( 45 )
$356.99
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$516.99
UMI Performance Tubular K-Members
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
( 18 )
$699.97
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$1,566.96
Stifflers Suspension Weld-On Subframe Connectors
Stifflers Suspension weld-on subframe connectors are engineered to be stiff, lightweight, and easy to install. These full-length connectors are manufactured from 1.5 in. x 2 in. x .083 in. rectangular tubing. They are optimized using CAD/CAE software to provide the ultimate in stiffness, reduced weight, and maximized surface area between the subframe and connector. Stifflers subframe connectors feature crimped and welded tube ends to seal out moisture, while also increasing strength, and a laser-cut cross brace that reduces free span, reinforces the floor pan, and minimizes required welding during installation. All is given an industrial-grade powdercoat for long life. Welding areas are pre-masked, so no removal of powdercoat is needed before installation--a real time-saver!
( 11 )
$189.95
On Sale
Competition Engineering Transmission Crossmembers
These universal transmission crossmembers from Competition Engineering make transmission installation and removal quick and easy. They include a 1 5/8 in. x .134 in. wall tube, four flat mounting tabs, and four concave mounting tabs with all hardware. Welding is required.
( 16 )
$119.99
$107.99
Hotchkis Sport Suspension Convertible X Brace Supports
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
Stifflers Suspension Web Braces
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
UMI Performance Torque Arm Relocation Kits
UMI Performance torque arm relocation kits are designed to remove the front mounting point of the torque arm off of the transmission and protect the tailshaft from damage. General Motors' tailshaft mounted design works great for a stock-driven vehicle; however, it is not designed to take abuse and hard launches. UMI Performance torque arm relocation kits replace your transmission crossmember with a new, stronger setup with a built-in torque arm mount. Each relocation kit is designed to fit a specific transmission and will work with virtually any stock-style aftermarket torque arm, as well as with the factory torque arm. These units are built using rectangular mild steel tubing and 0.188 in. mild steel mounting plates and they include all hardware needed for installation. The torque arm mount is machined from 0.250 in. thick mild steel and features a new clamshell for appropriately attaching the torque arm to the new crossmember.
( 41 )
$265.14
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$269.99
California Pony Cars Conversion Transmission Crossmembers
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
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$178.95
On Sale
Steeda Ultra-Lite Jacking Rails
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 )
$144.95
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$284.95
$125.53
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$233.94
Detroit Speed Weld-On Subframe Connectors
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.
( 2 )
$283.95
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$692.95
Stifflers Suspension Mustang FIT Systems
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
Brothers Trucks Crossmember Exhaust Brackets
Lowering your truck is cool, but when you do, where are you going to put the exhaust--under the frame? You'll run out of room, real quick. Well, Brothers Trucks has the solution in their crossmember exhaust brackets. These kits include meaty steel components--brackets, bolts, and template—that allow modification of the factory trailing arm crossmember for dual exhaust. They are ideal options if you don't want to remove the crossmember and still be able to tuck the exhaust up inside the frame, and they are the perfect solution for someone that doesn't have access to a welding machine. The provided metal template allows perfect alignment for the bolt holes and exhaust cut out. It utilizes an existing hole in the crossmember to locate the template, then insert one of the supplied bolts, clamp in place, and mark the remaining holes for drilling. For the center hole, the hole in the template is larger to allow a plasma torch to be used as a guide, but if you don't have a plasma torch other means, such as a hole saw, can still be used to cut the hole. Get more clearance for exhaust without weakening your truck's frame when utilizing Brothers Trucks crossmember brackets. Features: * Exhaust tailpipes fit through the holes in the frame for easier installation and more ground clearance when adding dual exhaust * Fits rear wheel drive trucks with trailing arm and coil spring rear suspension * Steel construction * Allows up to 3 in. dual exhaust system * Includes two pre-welded cut-out pieces, drilling template, and Grade 8 fasteners
( 1 )
$157.95
Allstar Performance Nitrous Oxide Bottle Brackets
Allstar round tank brackets are ideal for nitrous bottles. They're manufactured from billet aluminum and feature a uniquely designed hinge bracket to simplify tank installation and removal. Available in polished and black finishes, the brackets are offered in a wide variety of sizes to fit many applications—including NOS and fire bottles. Allstar round tank brackets have a flat bottom with 2.5 in. bolt spacing, and when used with Allstar Performance chassis brackets, they will complete your mounting needs.
( 1 )
$79.99
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$84.99
BMR Premium K-Members
BMR Premium K-members are direct replacements for factory K-members, removing 15.5 lbs. from your vehicle's front-end. The reduced weight results in increased weight transfer and better traction. Premium K-members feature increased bracing for heavy-duty, road race construction, welded spring seats for use with conventional springs and struts, and their installation requires no modifications for fitment. Additional features: * Uses SN95 steering geometry * Increased weight transfer * Maintains stock engine height * DOM 1.50 in. main cross bar, 3/16 in. steel plate * Durable Black Hammertone or Red powdercoat finish
( 3 )
$529.95
Global West Suspension Monte Carlo Bars
These high quality Monte Carlo bars manufactured by Global West Suspensions will help stiffen and increase the handling of your vehicle's chassis. Global West Suspension designed these bars to be adjustable, which makes dialing in the perfect combination easier. All of the Global West Suspension Monte Carlo bars feature right and left hand rod ends with the jam nuts. The length of the Monte Carlo bars is adjusted by threading the rod ends in or out. Once the bar brackets are attached to the fenders, they will not need to be removed again for bar removal.
( 16 )
$159.50
