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QA1 R-Series Front Coil-Over Conversion - 150lb Springs (94-04 All)

AmericanMuscle no longer carries the QA1 R-Series Front Coil-Over Conversion - 150lb Springs (94-04 All). Please check out Mustang Coil Over Kits for an updated selection.
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AmericanMuscle no longer carries the QA1 R-Series Front Coil-Over Conversion - 150lb Springs (94-04 All). Please check out Mustang Coil Over Kits for an updated selection.

Features & Details

  • Perfect for Drag Racing Applications
  • 150lb Spring Rate
  • Adjustable Front Coil-Over
  • Bolt-In Installation - No Cutting or Welding Needed
  • Re-Buildable and Re-Valveable
  • Lightweight Steel Construction
  • Made in the USA
  • Fits All 1994-2004 Mustangs
"R" Series. If you are looking for better 60ft times and better control on the track look no further than QA1's "R" Series Mustang Coil-Over Conversion Kit, this kit is perfect for drag racing applications.

Adjustable. Built specifically for drag racing with 18 valving options of rebound adjustment and a firm compression, these QA1 "R" Series Mustang Pro Coil System gives you the control you need on the track.

Superior Construction. Constructed in the USA from lightweight steel for durability, this QA1 Adjustable Front Coil Over Kit features (2) high performance "R" series Struts and (2) specially designed 150lb rate coil over Springs.

Bolt-on Design. QA-1 designed their Mustang Front Coil-Over Kit to be an easy, bolt-on conversion with abouslutley no cutting or welding required for installation.

Re-buildable and Re-valveable. These QA1 "R" series front struts are re-buildable and re-valveable by either the QA1 Factory or a QA1 authorized service center.

Application. This QA-1 R-Series Front Coil-Over Conversion Kit is designed for use on all 1994 to 2004 Ford Mustangs, including the V6, GT, Bullitt, Mach 1, and SVT Cobra models.
What's in the Box
  • (2) Struts
  • (2) 150lb rate springs
  • Required mounting hardware
Installation Info
Tech Specs

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3 Questions / 5 Answers

Ask a Question

tubular a arms Will these work with the qa1 tubular a arms?


  • These Coilovers are made to fit only with QA1 A arms.


Helpful (1)

I got Maximum Motorsport Caster and Camber plates would this coilovers will work with them?


  • The QA1 R-Series Front Coil-Over Conversion has not been tested with Maximum Motorsports Caster Camber Plates.

    Rob D

Helpful (0)

What's the difference between the 150lb and 175lb spring weight? I see the coil over springs come in 150 lb and 175 lb spring weight, but there's no explanation for the different weights. I have a 2000 Mustang Gt convertible, which should I use?


  • 150 lbs is roughly what comes stock on most cars your bodystyle. 175 lbs would stiffen up the car suspension quite a bit. It would make it ride a little stiffer but handle better.It may also rise the body height some. if your car is used for pleasure & comfort go with the 150 lbs. Where it is a convertable with a v8, it is a little heavier, if you plan on racing it go with the 175 lbs.


Show 2 more answers Helpful (0)

Customer Reviews (2) Write a Review

Overall Rating 4.5

out of 5 stars

Installation Time:Afternoon

  • Handling Improvement 4.5 4.5
  • Ride Quality 4 4
  • Fit 5 5
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Less than 1 Hour

    June 17, 2017

    twin turbo build

    Ordered theese coil overs for my build. They work good once you dial them in. I also have adjustable upper and lower control arms in the back., along with double adjustable qa1 shocks


    Year: 2003 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Full Day

    April 08, 2016

    Bumpy but nice

    Only flaw is a rough ride. You feel every crack. They look nice and fit perfect. No more wheel gap for me!


    Year: 2015 Submodel: GT500

    Helpful (2)

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