64-70 Mustang QA1 Subframe Connector Kit, for QA1 4 Link
QA1 Tubular Subframe Connectors for 65-70 Ford Mustangs w/ QA1 4 Link Rear Suspension Kit
Give your classic Mustang the solid chassis foundation it deserves with QA1 Tubular Subframe Connectors for 1965–1970 Mustangs. Designed specifically to work with the QA1 4-Link rear suspension, this weld-in (front) and bolt-in (rear) chassis upgrade dramatically reduces your Mustang's unibody flex, tightens handling, and transforms how your Mustang feels on the street or track.
By tying the front and rear subframe rails together, these connectors eliminate the weak points common in unibody Mustangs—especially during hard acceleration, cornering, and spirited driving.
Sold as PAIR
Description
QA1 Tubular Subframe Connectors for 65-70 Ford Mustangs w/ QA1 4 Link Rear Suspension Kit
Give your classic Mustang the solid chassis foundation it deserves with QA1 Tubular Subframe Connectors for 1965–1970 Mustangs. Designed specifically to work with the QA1 4-Link rear suspension, this weld-in (front) and bolt-in (rear) chassis upgrade dramatically reduces your Mustang's unibody flex, tightens handling, and transforms how your Mustang feels on the street or track.
By tying the front and rear subframe rails together, these connectors eliminate the weak points common in unibody Mustangs—especially during hard acceleration, cornering, and spirited driving.
Sold as PAIR
Special Notes
Strengthen the Backbone of Your Classic Mustang
Early Mustangs are legendary for style and simplicity—but chassis flex has always been one of their biggest drawbacks. Over time, flex leads to vague handling, reduced traction, and annoying squeaks and rattles.
QA1’s tubular subframe connector kit fixes that problem at the source.
The rigid tubular design reinforces the unibody structure, creating a more stable platform that allows your suspension to work as intended. The result is a Mustang that feels tighter, more predictable, and far more confident behind the wheel.
Perfect for:
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Street-driven classics
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Restomods with modern suspension
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Pro-touring and track-focused builds
Bolt-On Installation – No Floor Cutting Required
Unlike weld-in connectors that require permanent modification, these QA1 subframe connectors are engineered for a true bolt-on installation. No cutting into the floorpan, no fabrication, and no headaches.
They fit tightly against the factory frame rails and integrate seamlessly with the QA1 4-Link rear suspension, ensuring maximum rigidity without compromising ground clearance or interior space.
Features & Benefits
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Direct fit for 1965–1970 Ford Mustangs equipped with QA1 4-Link suspension
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Heavy-duty tubular steel construction delivers strength without unnecessary weight
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Significantly reduces chassis flex for sharper handling and improved feedback
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Improves traction and stability under acceleration and cornering
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Weld-In/Bolt-on design – Welding required at the front and bolt-in w/ option to weld in rear, no floorpan cutting required
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Black powder-coated finish for corrosion resistance and long-term durability
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Designed to complement QA1 suspension systems for a complete, balanced setup
Fitment & Compatibility Notes
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Fits 1965–1970 Ford Mustangs
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Designed exclusively for use with QA1 4-Link rear suspension systems
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Not compatible with factory leaf springs or other aftermarket rear suspensions
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Bolt-on installation only – professional installation recommended
Why Buy QA1 Subframe Connectors from Stang-Aholics?
At Stang-Aholics, we specialize in performance parts that actually improve how classic Mustangs drive. QA1 subframe connectors are a must-have upgrade if you’re serious about handling, chassis rigidity, and long-term structural integrity—especially when paired with modern suspension components.
If you’re building a Mustang that’s meant to be driven hard and enjoyed, this upgrade belongs under your car.
Frequently Asked Questions (FAQS)
What is the purpose of subframe connectors on a classic Mustang?
Subframe connectors reinforce a classic Mustang’s unibody by linking the front and rear subframes into one solid structure. This added rigidity minimizes body flex, allowing the suspension to work more effectively. The result is improved handling response, better traction, and a noticeably tighter, more stable driving feel.
Are the QA1 52087 subframe connectors a bolt-on installation?
Yes and No. The QA1 52087 Subframe Connector Kit is engineered as a true upgrade. It installs by plug welding the front saddles to your Mustang's original from frame rails, and bolts in to the frame rail section in the rear and interfacing with the QA1 4 Link system for strength. It does NOT require any cutting or changing the stock floorpan, making it an excellent option for restorations, restomods, and performance builds that require a clean, reversible installation.
Do subframe connectors make a difference on a street-driven Mustang?
Absolutely. Even Mustangs that are primarily street-driven benefit from subframe connectors. By reducing chassis flex, they help eliminate squeaks and rattles, improve ride quality, and make the car feel more planted—especially when paired with modern suspension components or increased engine power.
Will QA1 subframe connectors work with coilovers and sway bars?
Yes. QA1 subframe connectors are designed to work in harmony with QA1 suspension components, including coilovers, sway bars, and control arms. By stiffening the chassis, they allow these performance upgrades to deliver their full potential without chassis movement interfering with suspension geometry.
What vehicles does the QA1 52087 subframe connector kit fit?
The QA1 52087 Subframe Connector Kit is designed specifically for 1964–1970 Ford Mustangs equipped with a QA1 rear 4-Link coilover conversion. It is not compatible with factory leaf springs or other aftermarket rear suspension systems.
Details
- QA1-52087
- QA1-52087
- QA1 Suspension
- New
Shipping Information
- Item Requires Shipping
- FREE SHIPPING on orders *$199 or more
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