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Ford Performance Lowering G-Springs (79-04 Convertible, Excluding 99-04 Cobra)

Market Price $287.02 You Save 12% ($33.02)
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  • Item 101544

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    Features & Details

    • Aggressive Stance
    • Lowers Center of Gravity
    • Improves Handling
    • Progressive Spring Rate
    • Estimated Drop: Front 1.2"; Rear 1.2"
    • Fits 1979 to 2004 Convertible Mustangs, Excludes IRS Models
    • Clears Stock and Aftermarket Wheels & Tires.
    Improves Handling. These Ford Racing "G" Springs will lower your convertible Mustang approximately 1.2" giving it a more aggressive stance and a lower center of gravity greatly improving your pony's handling over the stock springs.

    Aggressive Stance. Adding a set of Ford Racing lowering springs to your Mustang can greatly improve its appearance by getting rid of that "4x4" look that it came with from the factory for a more aggressive stance.

    Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your stock size wheels and tires, as well as AmericanMuscle's pre-configured wheel and tire combo kits (specific to your generation), to assure proper clearance with no rubbing issues.

    Application. The Ford Racing G Springs will fit all convertible Mustangs from 1979 to 2004, except the 1999-2004 Cobra's with Independent Rear Suspension (IRS). Lowers approximately 1.2" front; 1.2" rear.

    Spring Rates:
    • Front: 500/570 lb/in.
    • Rear: 170/310 lb/in.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

    MPN# M-5300-G

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (4) Lowering Springs
    Installation Info
    Tech Specs
    Springs Specifications
    Spring Rate: Front: 500/570 lb/in.
    Rear: 170/310 lb/in.
    Usage: Street
    Year: 1979-2004 Model: All convertible except IRS Cobra's
    Progressive or Standard: Progressive Estimated Drop: 1979-2004: 1.2"F / 1.2" R
    Will it fit my Mustang?
    • Cobra - 94, 95, 96, 97, 98
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

    Fits convertible models only.

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    Questions & Answers (4)

    4 Top Rated Questions

    will I have to replace the Castor Camber plates when installing these springs?

    • Caster camber plates are recommended for anything over a 1 inch drop. While they're not essential for a good alignment with a 1.2 inch drop, they are definitely necessary for a 'perfect' alignment.

    Helpful (3)

    will these springs fit a 2003 mach 1?

    • The Ford Racing Lowering G-Springs - Convertible (79-04 GT, V6; 93-98 Cobra) will not fit a 2003 Mach 1. If you are looking for Ford Racing lowering springs that would work, I recommend the Ford Racing Lowering B-Springs - Coupe & Convertible (79-04 GT, V6, Mach 1; 93-98 Cobra) item #50151 (

    Helpful (2)

    What makes these springs only compatible with convertible Mustangs? The only difference I can see between these and the "B" springs are that the front and back drop an equal amount on these, whereas the "B" springs drop the front more.

    • Convertibles are actually a bit heavier than coups, so because of this, there are often springs that rated specifically for one or the other. Technically, you could put these springs under your mustang, however it won't quite drop as low as advertised, and it will be a much stiffer ride than the designed intention. For this reason I would suggest finding a spring specifically rated for a coup.

    Helpful (2)

    Will I need to replace anything if I was going to put this on a 1995 Mustang GT Convertible with everything stock suspension wise? I heard you need to put new Camber bolts and Isolators and thats it for it to be good.

    • When installing the Ford Performance Lowering G-Springs we recommend installing new spring isolators be installed. Camber bolts are not required, but will make it easier to get the alignment back into spec.

    Helpful (0)
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    Customer Reviews (12) Write a Review

    Overall Rating 4.6

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Handling Improvement 4.666667 4.7
    • Ride Quality 4.75 4.8
    • Appearance 4.5 4.5
    • Bang For Your Buck 4.333333 4.3

    • 5/5

      Installation Time: Afternoon

      June 30, 2018

      2004 mustang GT convertible-sonic blue

      These springs are very nice if your looking for a mild drop and better handling. They are made by eibach. The car has the perfect stance I was looking for. Ride quality is excellent. The staff at American muscle have advised me well. Two thumbs up


      Year: 2004 Submodel: GT

      Helpful (14)

    • 5/5

      Installation Time: Afternoon

      June 18, 2018

      Huge improvement

      was on 1992 springs........dropped more in rear than front however front will probly settle a bit. ride is nice and firm but not too firm . installed with eibach pro dampers?


      Year: 1992 Submodel: GT

      Helpful (8)

    • 4/5

      Installation Time: Afternoon

      June 08, 2018

      Lower than Expected, but worth it.

      I'm glad I went with these springs. It is rated at 1.2" drop, I think that's what I saw in the Front, however the back is closer to 2". Ride is nice and compliant. Handling is much sharper. I used SR's Poly Isolators front and rear. Shocks were new (last year) Monroe Senso-matics (think that's the model). Probably will go with KYB GR-2/Excel or KONI Orange when these wear out.


      Year: 1994 Submodel: GT

      Helpful (7)

    • 5/5

      Installation Time: Shop Install

      May 16, 2018

      low rider

      for the money the springs are great install was a breeze by shop. they are breaking in nicely rides like new car looks great lowered approximately 1.5 " height is perfect now. it totally eliminated all that blank space above very happy with these


      Year: 2003 Submodel: V6

      Helpful (7)

    • 5/5

      Installation Time: Full Day

      November 22, 2017

      The Correct Spring for a Convertible

      If you have a convertible, this is the spring set for you - stay away from the others that don't specify "for convertibles" as they will dump the front end in the dirt. Great lowered stance, the way it should have come from the factory. Vastly improved ride quality and handling, but most of all fixes the 4x4 suspension look.


      Year: 1996 Submodel: Cobra

      Helpful (14)

    • 4/5

      Installation Time: Afternoon

      February 16, 2017

      Good allaround springs

      I took off a set of racing springs that handled like I was on rails, unfortunately it was rattling my interior apart. These are stiffer than stock but still have a good ride. We had to install the fronts 2 times because the car looked like a 4x4 still after we took it off the stands. We pulled it all apart and took out the top isolators. This made them look much better. We left them out in the rear to keep the measurements consistent. These make the car level so the tail drops more. The front looks perfect, but I think the rear isolators will get put back in when we do the gear swap. It looks just a touch too low. I docked them a star for having to remove my front isolator to look like a lowered front. After a couple days of settling it looks great. They come in the red Eibach box so you do the math what they really are. Overall I am happy with them.


      Year: 1995 Submodel: GT

      Helpful (17)

    • 5/5

      Installation Time: Afternoon

      February 19, 2016


      Great product and super quick shipping! Thanks American Muscle for helping keep the passion alive!


      Year: 2000 Submodel: GT Wabash, IN

      Helpful (10)

    • 4/5

      Installation Time: Afternoon

      January 27, 2016

      Great Ride

      Very good springs, easy install and great ride, and comfortable enough .


      Year: 2002 Submodel: V6 Las Vegas, NV

      Helpful (8)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 22, 2015

      Ford Racing "G" Springs

      Let me first say that the AM staff (shout out to Mike @ ext. 102) are awesome fellow mustang enthusiasts that made my purchase a pleasant transaction. I chose these springs for my '99 35th special anniversary package GT convertible as part of a complete suspension restoration / overhaul. My goal for the springs were to: 1) Fill in some of that wide gap between tires and wheel well AND 2) Maintain excellent street road manners. It did both jobs very well, and as a side bonus did contribute to improved handling. Before purchasing, I did extensive research on various forums and could not find much information about these springs. When I recorded the order, I was alarmed when it came in an Eibach pro-kit box. Turns out, as I found out discussing with the AM staff, these springs are engineered by Ford Racing but manufactured by Eibach. If you look closely at one of the product pictures, you will see the Eibach logo on the spring. I am happy with my choice. With new poly isolators, my car dropped about 1". It gave my stang a great stance with a very slight "raked" look. The drive quality is outstanding. The car feels firm, but not stiff. The spring rates match very well to the dampening characteristics of Koni STR.T orange shocks/struts. I can't comment on how they perform at the strip or track, but if you are considering these for a street-driven won't be disappointed.


      Year: 1999 Submodel: GT Dallas, TX

      Helpful (17)

    • 5/5

      Installation Time: Afternoon

      August 22, 2014

      good springs but did not lower the car very much at all

      Good springs but I would of liked to lower the car a bit more Did not lower as much as they stated


      Year: 2000 Submodel: GT Schomberg Ontario

      Helpful (8)

    • 4/5

      Installation Time: Afternoon

      May 25, 2014

      Great spring for daily driver

      Good ride, less nose dive when braking and better steering response. I was expecting the car to lower a bit more but i like it that way. I recommend to instal new spring insulator all around for best result. Installation in the back is a peace of cake but i recommend an extra pair of hand to do the front.


      Year: 1988 Submodel: Other Gatineau, QC, Canada

      Helpful (10)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      May 23, 2014

      Great look... Not too low, ride is still good

      Mounted in a GT Convertible... It got rid of that 4x4 factory look. Mild drop, needed alignment. No special caster/camber plate needed. Factory strut mount has enough adjustability built into it to get the front end back into spec. I am more careful about potholes although.


      Year: 2002 Submodel: GT Sterling Heights, MI

      Helpful (16)

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