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GMC Chassis Components
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Summit Racing™ Dual-Exhaust Transmission Crossmembers
Summit Racing™ steel transmission crossmembers allow you to run a true dual-exhaust system with most popular 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.
( 626 )
$59.99
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$479.99
Instant Rebate
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
Rust Buster Frame Repair Sections
Rust Buster frame repair sections help you replace those rusted or damaged frame rail areas on your truck or SUV. The EZ slip design allows the repair section to slide onto the frame and will include all the factory needed holes and mounting locations. Rust Buster uses the latest in CAD to model each repair section before it is laser-cut, formed and finish welded. Keep your ride on the road for years to come with Rust Buster frame repair sections.
( 44 )
$69.99
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$499.99
Trans-Dapt Performance Crossmembers
Trans-Dapt Performance crossmembers eliminate the need to fabricate a rear crossmember. Their vehicle-specific transmission crossmembers are available as kits, with braces and mounting pads, or as the crossmember alone. Position your engine and transmission properly and exactly where you need them with quality, durable crossmembers from Trans-Dapt.
( 114 )
$82.99
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$311.99
Summit Racing™ Frame Brace Kits
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
( 71 )
$1,299.98
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$1,339.98
Summit Racing™ Lightweight Transmission Crossmembers
Strengthen your transmission support and reduce the weight of your vehicle with Summit Racing™ lightweight transmission crossmembers. Through advanced design and manufacturing, these crossmembers are stronger than standard boxed-steel transmission crossmembers, while weighing an average of 35-percent less. The crossmembers are a direct bolt-in and do not require any additional brackets or adapters to complete the installation. They also allow you to run a true dual-exhaust system with most popular GM transmissions and do not affect ground clearance. The welded design with clear powdercoat finish gives these lightweight crossmembers a fabricated look that's sure to complement your ride. Order the model recommended fit your application.
( 15 )
$319.99
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$449.99
UMI Performance Transmission Crossmembers
UMI Performance transmission crossmembers are designed for late model F-bodies. These crossmembers are built using 0.120 in. rectangular tubing, 0.188 in. mild steel mounting plates, and a 0.375 in. thick transmission mount. These crossmembers are powdercoated bright red or gloss black and include new mounting hardware.
( 8 )
$349.99
Doug's Headers Engine Swap Transmission Crossmembers
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
( 9 )
$288.77
Summit Racing™ Cummins Conversion Crossmembers
Summit Racing™ Cummins conversion crossmembers are specifically designed for installing a Cummins 6BT into your 1973-87 Chevy 4WD truck or 1973-91 4x4 Suburban. These drop conversion units often eliminate the need for a lift kit. They're a direct bolt-in, utilizing OEM hole locations, yet still allow room for drilling and adding additional bolts for increased rigidity. The crossmembers are made from high-quality steel with a black powdercoat finish. It's a fact—any conversion can be tricky. Thankfully, Summit Racing™ offers the correct components to help you get the job done right!
( 7 )
$234.99
On Sale
Hooker Blackheart Transmission Crossmembers
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
( 29 )
$449.95
$224.95
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$478.95
Rust Buster Fuel Tank Crossmembers
Rust Buster fuel tank crossmembers are designed as a frame repair component, strategically sized to install in place of the factory fuel tank crossmember to provide essential reinforcement to your vehicle's frame. This repair section is designed to seamlessly integrate into your vehicle's frame, while enhancing its overall structural integrity. The fuel tank crossmembers are constructed from premium thick steel, providing exceptional strength and resilience. The bare finish not only showcases its robustness but also allows for customization to suit your aesthetic preferences. The installation process is straightforward with its cut-out and weld-in installation type. To safeguard against rust and corrosion during shipping, this replacement part comes with a rust-preventative oil coating. Order the fuel tank crossmember designed for your application.
Not Yet Reviewed
$249.99
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$599.99
Classic Performance Drop Center Crossmembers
Adding a decent size lift kit or lowering kit onto a truck brings certain requirements. For the latter, you'll need Classic Performance drop center crossmembers to complete the rear end. They feature a 1/4 in. laser-cut steel plate with raised center hoop for eliminating driveshaft interference on slammed trucks. These units bolt into the stock location with no cutting or welding required. Classic Performance crossmembers are designed to accommodate up to 3 in. dual exhausts; and the mounting brackets for trailing arms are welded on at the correct angle to allow for alignment to the rear housing. When planning out the parts needed to safely complete your lowered truck, remember to include Classic Performance drop center crossmembers.
( 14 )
$174.99
Summit Racing™ Transmission Crossmembers
Summit Racing™ transmission crossmembers allow proper mounting of your applications transmission. They're available for a variety transmissions and are manufactured to each vehicle's specifications for a precision fit. The durable steel crossmembers come with all necessary installation hardware.
( 15 )
$74.99
Rust Buster Crossmember Frame Repair Sections
Rust Buster crossmember frame repair sections are made from steel for durability, and ship raw and uncoated for easier weld-on installation. These quality frame repair panel sections are meticulously designed to replace the entire crossmember to help you to get your vehicle back on the road with a renewed life, and keep it that way for years to come. Take control of your own restoration, with Rust Buster crossmember frame repair sections.
( 6 )
$52.99
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$299.99
Classic Performance Transmission Crossmembers
Install your tranny in the proper position using one of these Classic Performance transmission crossmembers. They're available for a variety of Ford and Chevy transmissions and are manufactured each vehicle's specifications for a precision fit. The durable steel crossmembers come with all necessary installation hardware. Keep your gear system secure and stable with Classic Performance transmission crossmembers.
( 171 )
$66.99
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$89.99
Key Parts Wheel Tubs
Key Parts wheel tubs are original equipment, factory-style body panels suited for a professional restoration project. Over the years your original wheel tubs can become rusted, dented, cracked, or scratched, especially on classic vehicles that take the most beating from rain, road salt, dirt, and debris. Key Parts offers wheel tubs that are based on original specifications and dimensions—or you can get the extended width tubs, which are 4 in. wider than stock tubs to make room for wider tires! That makes stuffing those big wheel tire combinations much easier and driver friendly. The tubs EDP coating ensures a long-lasting durable finish for transport and storage, and they are ready for standard prep work prior to installation and paint for show quality results. Repair or replace rusted wheel tub body panels with high-quality, affordable reproduction wheel tubs from Key Parts. Order the wheel tubs for your application needs.
Not Yet Reviewed
$196.99
Ridetech Frame Braces
Ridetech frame braces increase the structural rigidity of your truck or SUV by triangulating the original frame rails and crossmember. These steel reinforcements are powdercoated black to resist the elements, and are available for a wide range of applications. Order a pair to stiffen the chassis and improve the handling on your vehicle.
( 3 )
$335.00
Rust Buster Spare Tire Crossmembers
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
$249.99
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$449.99
Bilstein Shock Reservoir Mounting Brackets
These Bilstein shock reservoir mounting brackets are designed to mount the shock reservoir to the mounting body of the other shock. They are manufactured from aluminum and are black anodized for durability.
( 14 )
$51.99
Rust Buster Rear Shock Crossmembers
Rust Buster's rear shock crossmembers are built to withstand the demands of the road. These rear shock crossmembers are strategically sized to install in place of the factory rear shock crossmember, providing essential reinforcement to your vehicle's suspension system. The precision of the laser-cut, bent, and welded steel construction ensures a perfect fit to seamlessly integrate into your vehicle's setup while enhancing its structural integrity. This enhancement is particularly crucial when navigating uneven terrains or carrying heavy loads, ensuring stability and longevity. To safeguard against rust and corrosion during shipping, this replacement part comes with a rust-preventative oil coating. The installation process is made simple with its cut-out and weld-in installation type. Don't compromise on safety or performance. Upgrade your vehicles suspension with rear shock crossmembers and experience the difference in stability and confidence while driving. Order the Rust Buster rear shock crossmember designed for your application needs.
Not Yet Reviewed
$269.99
Rust Buster Transmission Crossmembers
Transmission crossmembers help to distribute and maintain the forces and torque that result from the output of the engine and transmission. As time passes, ageing, exposure to the elements, etc., corrosion can set in creating a dangerous situation. Luckily, with a combined 45 years of experience, the Rust Buster engineering staff have a solution. Their transmission crossmembers will help to maintain your truck or SUV's structural integrity and keep it powering through the roads for years to come. By utilizing the latest in scanner solutions and CAD software, Rust Buster transmission crossmembers are designed and built, capturing all the correct contours and guaranteeing a perfect fit and an easier installation on your vehicle. Put an end to your rust issues with Rust Buster. Select the crossmember designed for your vehicle. Features: * Made from heavy-duty 11-gauge steel * Protective oil coating prevents oxidation during shipping * Back by a Lifetime Warranty * Transmission support plate (where applicable) * Welding required (where applicable) * OEM hole locations * Class 10.9 hardware (where applicable)
Not Yet Reviewed
$199.99
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$429.99
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 )
$157.99
Classic Performance Frame Stiffeners
Whether your truck's frame is rusted, sagging, or just needs extra support, Classic Performance frame stiffeners can do the job. These 17 in. long heavy-gauge steel sections are perfect for fixing rusted areas, general repairs, or helping to tie sections together during customization. The frame rail braces can be drilled and cut to the length and shape needed. Vintage Chevy and GMC trucks have become increasingly popular as restoration projects. For strength, durability, and performance, Classic Performance frame stiffeners are the ideal reinforcements.
( 8 )
$44.99
Dorman Spare Tire Crossmembers
Dorman offers spare tire crossmembers for a variety of applications, including many Chevy and GMC vehicles from 2001 and up. These OE replacements can be swapped in for original parts that are damaged by corrosion or impact. Machined from steel for reliable, long-lasting service, the crossmembers match factory dimensions for an accurate and true frame repair. Each part has undergone vehicle try-on, material, and corrosion testing to ensure proper fit and performance.
Not Yet Reviewed
$226.99
