Summit Racing SpeedCard - learn how to get 10% back up to $100

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GMC Chassis Components

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Results 1 - 24 of 62

On Sale

Summit Racing™ Transmission Crossmembers

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.

4.68 out of 5 stars ( 593 )

$337.99


$57.99

$327.99

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.

4.41 out of 5 stars ( 29 )

$89.99

$429.99

On Sale

Summit Racing™ Dual-Exhaust Transmission Crossmembers

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.

4.68 out of 5 stars ( 584 )

$337.99


$57.99

$327.99

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.

3.81 out of 5 stars ( 111 )

$82.99

$311.99

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

$379.99

On Sale

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

4.24 out of 5 stars ( 67 )

$1,249.99


$1,124.99

$1,299.98

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

4.37 out of 5 stars ( 27 )

$418.95


$164.95

$449.95

On Sale

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!

4.6 out of 5 stars ( 5 )

$226.99


$204.29

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

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

4.4 out of 5 stars ( 5 )

$279.00

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

$263.99

On Sale

Hooker LS Engine Swap Transmission Crossmembers

Hooker LS engine swap transmission crossmembers are built to mount the transmission in place when switching to an LS engine. They are designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety, and appearance. The crossmembers are manufactured from high-strength, low-alloy steel and then black powdercoated for maximum durability. They provide an engineered 3 to 3.5 degree engine/transmission inclination angle that is critical to obtaining suitable U-joint working angles. They are designed to be used in conjunction with Hooker LS engine swap brackets to provide a bolt-in installation of Hooker LS swap manifolds, headers, and exhaust systems for this application.

4.62 out of 5 stars ( 42 )

$349.95

$375.95

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.

4.85 out of 5 stars ( 13 )

$305.99

$436.99

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.

4.37 out of 5 stars ( 167 )

$66.99

$89.99

Dorman Fuel Tank Crossmembers

Dorman fuel tank crossmembers replace your damaged original equipment. They're made of durable steel and finished in weldable primer for a clean, reliable repair. Verify the fitment to your vehicle when ordering.

4.78 out of 5 stars ( 9 )

$156.99

$187.99

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

Not Yet Reviewed

$154.95

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.

4.43 out of 5 stars ( 14 )

$42.00

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.

4.92 out of 5 stars ( 12 )

$174.99

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 Forward Gas Tank Crossmembers

Rust Buster forward gas tank crossmembers are for those who need a reliable replacement to restore or maintain the structural integrity of their truck. Crafted from durable steel, this forward gas tank crossmember is a weld-in replacement piece that conforms to OEM specifications, ensuring a perfect fit and long-lasting performance. It's designed to replace the existing fuel tank crossmember in your truck, seamlessly integrating with the frame. Shipped in its raw state, this repair piece ensures that the crossmember arrives in excellent condition, ready for installation. Rust Buster forward gas tank crossmembers are more than just an upgrade part; they're an investment in the longevity and safety of your vehicle. Order the forward gas tank crossmember designed for your application.

Not Yet Reviewed

$329.99

Brothers Trucks Cab Mount Supports

Brothers Trucks cab mount supports are quality stamped for a precise fit and appearance. Available in models to fit either the driver or passenger side of your truck, these bracket supports are constructed with thick, OE-gauge steel to provide high-strength and then are EDP coated for corrosion protection. Replace those aging or rusty cab mounts with brand new supports. Order the model designed to fit your Chevy or GMC vehicle.

5.0 out of 5 stars ( 1 )

$182.95

Belltech Transmission Crossmembers

Belltech crossmembers are designed to exceed OEM load specifications and are direct replacements for the factory units. A gain of 2.25 in. of clearance is achieved. Belltech low-profile design crossmembers reduce the risk of bottoming on extremely lowered trucks.

5.0 out of 5 stars ( 3 )

$289.00

Rust Buster Body Mount Brackets

Water, dirt, and salt commonly gets trapped between the body mounts and bushings, causing them to rot and rust. Rust Buster body mount brackets are designed to effectively address these common issues. The brackets are made from robust steel, each bracket is engineered for a perfect fit, precision bent and welded, and all necessary factory holes and mounting locations are integrated into the bracket design, ensuring a smooth and straightforward installation process. Rust Buster includes the necessary hardware, all you have to purchase some new bushings, weld-up the new bracket, paint it, install the new bushings, bolt the cab down and you are on the way. Order the brackets for your application needs. Product details: * Made from high-quality heavy-duty 11-gauge steel * By utilizing the latest in Scanner Solutions and CAD Software Rust Busters' engineering team is able to capture your specific model truck's frame contours down to the smallest detail * Each bracket is precision bent and welded for ease of installation and a perfect fit * Fits regular cab, access cab and double cab * Available in applications for driver or passenger side—depending on your application, brackets mount on frame near front of Cab or in front of the forward leaf spring perch * Includes two welded nuts and two bolts for body mount flange * Accepts OEM body mount bushing and flange along with most aftermarket alternatives * Parts ships with an oil protective coating to prevent oxidation during transit * Requires welding for installation

Not Yet Reviewed

$69.99

$269.99

Rough Country Body Lift Kits

Rough Country offers body lift kits for a variety of applications, including many Chevy, GMC, and Jeep models. They provide from 1 in. to 3 in. of lift and additional tire clearance, as opposed to stock height. From simple polyurethane block spacers … to all-inclusive kits with fiberglass-reinforced nylon body pucks, hardware, and accessories, these body lift components increase ground clearance while retaining the noise and vibrating canceling characteristics of factory mounts. Some kits include front and/or rear relocation brackets. Order the kit designed for your vehicle.

Not Yet Reviewed

$129.95

$379.95

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