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BBK Progressive Rate Lowering Springs (79-04 V8, Excluding 03-14 Cobra)

Item 56087
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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Huge Improvement in Handling and Appearance
      • Improved Stance
      • Lowers 1.5" Front and 1.5" Rear
      • Sold as a Set of Four
      • Fits 1979-2004 V8's, Excludes 99+ IRS Cobras
      • Clears Stock and Aftermarket Wheels & Tires.


      Improved Handling. BBK engineered their lowering spring kits for optimum handling on the 1979-2004 V8 Mustangs. These BBK springs are rated at 650lb front and 250lb in the rear, they will lower your pony approximately 1.5" giving you a firmer ride and the handling you need for spirited road and track use.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 BBK Specific Rate Lowering Springs are specifically designed for use on the 1979 to 2004 V8 mustangs, but exclude the 1999 to 2004 Cobras with Independent Rear Suspension (IRS).Spring Rate:

      • Front: 650 lb/in
      • Rear: 250 lb/in


      • Huge improvement in handling and appearance
      • Sold as set of four
      • Suitable for Street driving

      Technical Note. These BBK springs will also fit 79-04 convertibles, but may lower the ride height an addition ¼ inch. These springs will not fit 1999 to 2004 SVT Cobra's with Independent Rear Suspension (IRS) or GT Mustangs converted to IRS.

      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# 2501

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (45)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 45 customers

      Installation Time: Afternoon

      Installation Cost: $250-$500

      • February 19, 2020

        1 2003 GT - BrentM

        Do Not Recommend

        It has been about 2 years since installing these on my car and one of the front springs has broken. Thing is, these springs are sold as a set of 4. Pros: 1)Much improved handling and 2 ) appearance Cons: 1) Springs squeak loudly at temperatures around 40 degrees F or less. 2) Spring broke after 2 year. And I have seen customers reporting the same experience in reviews on other websites. 3) More expensive than alternatives

        Helpful (0)
      • January 01, 2020

        5 1982 Other - MiGT01 Installation Time: Less than 1 Hour

        Easy install

        These springs were easy to install. Dropped the car exactly where I wanted it. She rides very smooth matched with new shocks

        Helpful (0)
      • September 04, 2019

        5 1998 GT - FrederickCook Installation Time: Less than 1 Hour

        Smooth ride and great look !

        Product exceeded my expectations with top notch performance in driveability and handling ! Did exactly what it was supposed to do, lowered my horse 1 and 1/2 inches and brought back the driving experience to like new condition ! Thanks AM, love driving my Mustang GT again ! :))

        Helpful (0)
      • August 24, 2019

        4 1999 GT - lobster100 Installation Time: Shop Install Installation Cost: $250-$500

        BBK Progressive springs

        I reluctantly cut the stocks springs that had a great look but rode horribly. After months of bouncing around, I purchased BBK Progressive spings that brought it back to a sensible ride, but not quite the low stance I was expecting. It dropped about 1" from original which is ok but I would rather an extra inch. At least I don't have to ride so cautiously over speed bumps or driveway rubs....

        Helpful (0)
      • August 10, 2019

        2 2004 GT - Joshua1225 Installation Time: Afternoon

        Not very happy

        I don’t know why but the car didn’t lower at all it’s the exact same height and I’m very confused why this happened. The car still looks like a monster truck

        Helpful (0)
      • May 12, 2019

        5 1993 GT - StephenT Installation Time: Weekend

        Spring has arrived

        Very nice set of springs well worth the price Recommend these for anyone

        Helpful (0)
      • April 18, 2019

        4 1999 GT - 50cal2019 Installation Time: Afternoon

        On time

        Order was filled and delivered with in four days. All parts were the correct parts. american muscle rocks!

        Helpful (0)
      • August 05, 2018

        5 2004 GT - Brandon Installation Time: Afternoon


        So far I love them, they dropped as advertised 1.5” and the handling has improved greatly as well!

        Helpful (6)
      • July 18, 2018

        5 1999 GT - GilbertoQ Installation Time: Afternoon

        Great look

        I bought this set for my mustang gt 1999 convertible and really changed the look of the car.

        Helpful (5)
      • July 18, 2018

        5 2002 GT - Rod

        nice add on

        cant wait for them to settle in right now its looking more like street rod in the rear but other than that handles better

        Helpful (5)

      Questions & Answers (14 answers)

      5 Top Rated Questions

      Are these progressive or specific rate springs? The title says progressive but the description says specific with specific spring rates.

      • These will indeed feature a progressive spring rate.

      Helpful (1)

      How much does the average lowering spring lower the car from stock height?

      • Lowers 1.5" Front and 1.5" Rear

      Helpful (1)

      Will these springs be ok used with stock shocks and struts? Wanting to know if I'll have to buy new shocks and struts as well.

      • You can definitely install these lowering springs with you stock shocks and struts. But with that said, you'll find that on your 1996, you'll likely have much better ride quality and performance when adding new shocks and struts as your stockers have just shy of 20 years of wear and tear on them. Hope this helps!

      Helpful (1) Show 2 more answers

      headers? I have long tube headers and was just curious if they would rub or scrap with these springs?

      • No they will not scrap unless u hit a big speed bump but in that case any exhaust will scrap

      Helpful (1) Show 2 more answers

      Will these still work on a convertible tho? I understand it might drop the rear slightly more than a hard top but is it the same springs? Thanks

      Post Your Question
      9 More Questions
      Why won't these work on my 2003 v6 covertable????? 1 answer
      I ordered these springs along with the KONI STR.T Rear Shocks and Strut kit SR Performance Caster Camber Plates. I also ordered the 2003 Cobra Style 17x9 wheels. I have 275/40/17 on order with Americas Tire for the rear wheels and 245/45/17's for the front. Will the 275's fit with no issue with the aforementioned set up, or do I need to adjust anything to avoid any rubbing issues? I keep seeing that I should flip the rear quad shocks. Thanks! 1 answer
      It says 79-04 V8. This wouldn't fit an 01 V6? And if so, why not? I thought the GT and V6 had identical suspension parts and fitment. 1 answer
      Hi.i own a 1990 mustang convertible. Am planning on installing full length subframe connectors.will i have clearance issues with bbk lowering coils? 1 answer
      Can I fit this kit with the AM 18 cobra R Pkg 285/35/18 rears 265/35/18 Nitto 555 will it rub on corners on a 95 convert GT 1 answer
      Will I need Caster/Camber plates with these? Running 17x8 on the front with 245s? Thanks in advance. 2 answers
      I assume a GT Convertible will drop more than a coupe due to the weight. How much more drop? And how much difference is there with and without isolators? Thanks! 1 answer
      I have an 01 gt on 20 inch staggered wheels would these springs fit? 1 answer
      Spring isos Are spring isos needed or do I have to order them with these springs. 3 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (4) Lowering Springs
      • (1) BBK sticker

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • Cobra - 93, 94, 95, 96, 97, 98
      • Cobra R - 93, 95
      • 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
      • Mach 1 - 03, 04
      • Other - 79, 80, 81, 82, 83, 84, 85, 86

      Does not fit 1999-2004 SVT Cobra's with Independent Rear Suspension (IRS)

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