Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

Steeda 2024 Ford Mustang Subframe Alignment and Support Kit

$284.95

Steeda has come out with a kit that all S650 Mustang customers have been waiting for.. The Steeda Subframe Alignment and Bushing Support System! We combined […]

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Steeda 2024 Ford Mustang Subframe Alignment and Support Kit

Steeda has come out with a kit that all S650 Mustang customers have been waiting for.. The Steeda Subframe Alignment and Bushing Support System!

We combined our ever-so-popular 555 4438 and 555 4437 kits into a money-saving combo kit where you, the customer, benefit! The S650’s subframe mounting holes are very large compared to the subframe mounting bolts. Since there is a large difference in bolt and hole size, the subframe can be misaligned from the factory up to 1/2″ from left to right. The Steeda Mustang IRS Subframe Alignment Kit is made from CNC-machined Delrin to avoid putting two dissimilar metals next to each other, preventing corrosion. Delrin is also less weight than aluminum or steel inserts, therefore keeping performance in mind. The Delrin sleeves slide into the subframe mounting holes and fill the extra space left between the subframe mount and bolt from the factory, eliminating any movement. Our Steeda Mustang IRS Subframe Alignment Kit guarantees that the subframe will be bolted to the same location every time it is lowered. Eliminating the need for unnecessary subframe alignments.

These Steeda S650 Mustang IRS Subframe Bushing Support System for your 2024+ Mustang GT or EcoBoost gives the rear end a much more solid feel with no NVH increase. The Steeda IRS Subframe bushings eliminate rear subframe movement notorious in the S650 Mustang GT or EcoBoost. A stiffened subframe allows the car to increase traction to the rear wheels and is the first step towards eliminating wheel hop. The Steeda Mustang IRS Subframe Bushing Support System for your 2024+ Mustang GT or EcoBoost is easy to install with basic hand tools. The Steeda IRS bushing kit also does not require any permanent modifications to the car.

S650 Fitment Confirmed

Product Benefits

  • Our IRS Subframe Bushing Support system fills in all factory voids in order to eliminate the movement of the IRS subframe.
  • Utilizes all 4 factory mounting locations, which completely restricts shifting or rotation (Competitors only support 2 locations)
  • Practically no added weight to the vehicle
  • Uses precision machined Delrin sleeves, which adds no NVH and limits vibration to the vehicle
  • CNC Machined parts for a precision fit, unlike welded and stamped parts with slotted holes
  • Aligns AND holds the subframe in place in all 4 mounting locations
  • Easy installation can be done in under 2 hours
  • It is more cost-effective than others on the market to control wheel hop
  • SKU: 555 4450-S650

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Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and excellent, so without hesitation, give us a call at (480) 576-8606. Feel free to direct message on our live chat or CLICK HERE to contact us via email.

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Frequently Asked Questions

How long does it take for my parts to ship?
If it’s in stock and ready to roll, your order usually hits the road within 1–3 business days.

For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.

Either way, we’ll keep you updated so you know exactly when your parts are leaving the pit lane.
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If your order ships via freight, you’ll get a separate email with a direct link to the carrier’s tracking page — easy and stress-free.
What happens if my parts get lost or damaged?
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If your shipment is lost, just email or call us — we’ll help track it down and guide you through the next steps to make it right.
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