Thermal R&D Catback Exhaust 18 Mustang GT

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Thermal R&D Catback Exhaust 18 Mustang GT

The new Ford Mustang GT has been an instant classic and drove us to create what we believe is one of the best aftermarket exhaust systems available for this car. We started with 3” diameter tubing and added a center straight through muffler while engineering resonators that implement our 'True Helmholtz Technology'. We then tested our system on the dyno and found a gain of 17 RWHP. This straight through design is made from high grade T304 Stainless Steel. The look is completed with a brushed finish tubing, polished mufflers & polished 4” quad angle cut tips.

The kit includes 6 specialized clamps that allow for ease of install and proper tip alignment. Additionally, adapters are included for those who are going the extra mile on their build and plan to run the system with performance headers.

Thermal R&D Exhaust systems are designed with quality of sound as our number one goal. Built from T304 Stainless Steel, the fit and finish of our products are designed for performance on both the street and the track. Understanding that the exhaust is the starting point for many builds, our high-performance exhaust will allow additional modifications to perform at their peak. We engineer our products with the goal of achieving the best all-around product for a given application.


  • 3" Diameter Tubing
  • Thermal R&D 'True Helmholtz Technology'
  • 304 Stainless Steel
  • 4" Quad Angle Tips


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  • 5
    Thermal catback

    Posted by Dwight Lowden on 26th Apr 2019

    Great system, very well made ssid by the exhaust pro who put system on and the clamps are top notch to. Great sound