QA1 Coilover Kit

Additional Information

QA1 RCK52407 Pro Coil Rear Coilover Kit, 79-04 Mustang, Handling,175 lb. Springs, Double 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. Double-Adjustable Coil-Overs Fine-tune your suspension for optimal performance on the street or track with our double-adjustable shocks. Independent tunability for rebound and compression allows you to dial in your suspension for any driving condition. Perfect for performance cars and drivers who demand the best in ride quality and handling. 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

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	qapHK42-FMM1	QA1 79-86 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX104M, 1x qapMUK01, 1x qapHD01-12200, 1x qapRCK52407, 1x qap52740)
	qapHK42-FMM2	QA1 87-89 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapHD01-12200, 1x qapRCK52407, 1x qap52740)
	qapHK42-FMM3	QA1 90-93 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52892, 1x qapBAX102, 1x qapMUK02, 1x qapHD02-12200, 1x qapRCK52407, 1x qap52740)
	qapHK42-FMM4	QA1 94-04 Ford Mustang Level 2 Handling Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52886, 1x qapBAX104, 1x qapMUK02, 1x qapHD03-12200, 1x qapRCK52407, 1x qap52741)

• 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

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

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

Dial in your ideal ride quality with the independently adjustable compression and rebound valving of QA1 Proma Star double adjustable coilover systems. They offer the perfect balance of street-ability and performance and are an ideal choice if you plan to use your car on the road and occasionally take it to the track.

With QA1 Proma Star double adjustable coilover systems you will improve overall handling, increase suspension tunability, and gain the ability to adjust ride height quickly and easily for a perfect stance and corner balance your car, maximizing performance. They are easy to install with basic hand tools in the factory mounting locations and does not require the use of a toe link relocation kit.

Coilovers are available with multiple spring rate options to help you find the perfect option for your intended use. The medium springs are great for cars that will mostly be used on the road. The firm option is geared toward track-oriented cars, further reducing body roll under hard cornering, and providing a more planted feel.