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RTR Tactical Performance Lowering Springs (05-14 GT Coupe, V6 Coupe)

Item 383790
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      Video Review & Installation

      Justin: Hey everybody, I'm Justin with, and I'm here with Vaughn Gittin Jr. to talk to you guys a little bit more about the '05 to '14 RTR Tactical Performance lowering springs for your S197. Now Vaughn, a lot of people at home might not even know the basic purposes of a spring on their Mustang. Can you break that down?Vaughn: Yeah, to put it quite simply, springs essentially hold the car up, define ride height, and help control weight transfer of the car.Justin: Very cool. Now when you and your team were developing the Tactical Performance lowering springs for the S197, what was your main objective?Vaughn: For us, ride quality is extremely important. We want you to enjoy driving your car on the street, but also have some tracking capability. So, we wanted a spring that wasn't too harsh, but was going to give you a significant increase in feel of performance behind the wheel, and now we achieved that 100%.Justin: Very cool. Now let's go over some of the specifics here. Now, 1½" drop all around, correct, a progressive rate spring, so that's going to give you that better ride on the road.Vaughn: Yeah, exactly, and that's exactly how we achieved that, you know. The car rides at a certain rate when it's under standard conditions, but as soon as the car starts to roll over, that rate gets progressive, increases a little bit, and that's when you start really getting the springs holding the car up, and get that more crisp feel and get the car listening to you a lot earlier on your inputs.Justin: Now, overall guys, spring install, again, not that bad. Leave yourself about a half a day in the garage to get this one knocked out. Again, you don't want to forget your spring compressor on this one, absolutely needed. The RTR Tactical Performance lowering springs, again, for your S197, you can grab them and the rest of the RTR line-up right here at

      Product Information

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


      • Aggressive Muscular Stance
      • Improves Handling Performance
      • Lowers Center of Gravity
      • Progressive Spring Rate
      • Gray Powdercoated Finish
      • Estimated Drop: Front - 1.5” Rear - 1.5”
      • Fits 2005-2014 GT and V6 Coupes
      • Clears Stock and Aftermarket Wheels & Tires.


      Improves Handling. Installing a set of RTR Tactical Performance Progressive Rate Springs will lower your Mustang's center of gravity, which will reduce squat during acceleration, body roll in the corners, and excessive nose-dive under hard braking. RTR Tactical Performance Springs are great for daily street driving and fun on the track. The progressive rate design offers a great ride quality for street cruising and does not lack performance when you get aggressive on the track.

      Aggressive Muscular Stance. RTR Tactical Performance Lowering Springs not only improve the handling of your S197 Mustang, but they also improve the overall appearance by lowering the ride height approximately 1.5" to eliminate that nasty raised 4x4 truck look for a more aggressive muscle car stance.

      Recommended Upgrade. Anytime you lower your Mustang, your rear axle gets moved out of alignment. Adding an Adjustable Panhard Bar will not only center your rear axle, but offers great traction during straight-line acceleration as well as superior strength over the factory panhard bar.

      Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your factory 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. This set of four RTR Tactical Performance Lowering Springs are designed for use on the 2005 to 2014 Mustang Coupes, including the V6, GT and Bullitt models. Does not fit Shelby GT500.


      Fitment: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

      RTR 0599-3000-03

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (4) Springs
      • (2) Strut Boots

      Tech Specs

      Springs Specifications
      Spring Rate:Front: 228 lb/in.
      Rear: 199.5 lb/in.
      Year:2005-2014Model:GT, V6 Coupes
      Progressive or Standard:ProgressiveEstimated Drop:1.5"F / 1.5" R

      Customer Reviews (83)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Boss 302 - 12, 13
        • Bullitt - 08, 09
        • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
        • V6 - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14

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