QA1 Coilover Kit

Additional Information

QA1 RCK52403 Pro Coil Rear Coilover Kit, 79-04 Mustang, Handling,175 lb. Springs, , Single Adjustable Shocks

Part Type

Coilover Set

Product Overview

Product Overview Improve your Mustang's suspension with QA1's bolt-in rear coil-over conversion kit. This kit includes specially designed mounting brackets, adjustable aluminum shocks, springs, and all necessary hardware. Ride Height Adjustability We understand that achieving the perfect stance for your car can be a challenge. That's why we've created a solution that makes it easy to adjust your ride height. QA1 coilovers feature a fully threaded, aluminum body which allows up-to 2 of lowering from stock. Single-Adjustable Coil-Overs QA1's 18-way adjustable single-adjustable shocks are tailored for street-driven cars that also hit the track. With a simple turn of the knob, you can adjust your shocks for a comfortable ride or a more aggressive valving, depending on your needs. Easy, Bolt-In Installation Our commitment to thoughtful product design is evident in every product we produce, to deliver the highest level of performance, while ensuring trouble-free compatibility. Best In-Class Lifetime Warranty Register at QA1.net/warranty for lifetime coverage of your QA1 shocks. Made in the USA QA1 coilovers are proudly made in Lakeville, Minnesota. Fitment Notes Does not fit Cobra IRS

• Adjustable shock valving options for all driving styles
• Best-in-class warranty
• Easy bolt-in install
• Made in the USA
• QA1 uniquely engineered to enhance the performance of your vehicle
• Ride height adjustability

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Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Coilover Kits, Proma Star Single Adjustable Coilover Systems, Rear, Twin-tube Shocks, Eyelet Mounts, 175 lbs./in. Spring Rate, Ford, Pair

As part of the number one choice for custom suspension systems, QA1 Proma Star single adjustable coilover systems are available in several lengths, making them easy to fit in almost any situation. Both the double-adjustable versions and these single-adjustable models allow you to set your valving to fit your driving style, so you are ready to hit the road, nearest racetrack, or anywhere in between. Get that perfect stance with adjustable ride height when you order the QA1 Proma Star single adjustable coilover systems best suited for your application.

Other product features include:
• On-the-car adjustable valving makes it quick and easy to dial in your desired level of comfort and performance
• Shocks feature a 2 in. body diameter and can be mounted in any orientation
• Spring mounting hardware designed for coil springs with a 2 1/2 in. inside diameter
• Alternative mounting options available to fit your custom chassis
• 100-percent dyno tested and serialized
• QA1 single-adjustable shocks are designed for performance street driving, autocross, and lower-powered drag racing (rear only)
• All QA1 single-adjustable shocks feature simultaneous compression and rebound adjustment on one knob (18 positions)