Thermal R&D 3" Catback Exhaust (15-17 Mustang GT) B906-C906

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Regular price: $1,199.00
Sale price: $1,079.10
(1 review) Write a Review
The new Ford Mustang GT has been an instant classic and drove us to create what we believe is one of the best aftermarket 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 put it on the dyno and found a gain of 25 RWHP. This straight through design is made from high grade T304 Stainless Steel. The look is completed with brush finish tubing, polished mufflers & polished 4.5” 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 all out on their build and plan to run the system to performance headers.


Thermal R&D Exhaust systems are designed with quality of sound and manufacturing 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.



&#8226 3" Diameter Tubing

&#8226 Thermal R&D 'True Helmholtz Technology'

&#8226 304 Stainless Steel

&#8226 4.5" Angle Tips




Beefcake Racing is an Authorized Dealer for Thermal R&D Exhaust, call 1-855-827-7223 9am-9pm EST



  • 2015 Ford Mustang
  • 2016 Ford Mustang
  • 2017 Ford Mustang

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  • 5
    Thermal - '16 GT

    Posted by Robert Borie on Jul 3rd 2021

    Install took about an 1.5 hours on jack stands (including removal of stock exhaust); very straight forward. I found it easier to install the reducers to the mid pipe vs. trying to fit the mid pipe to the reducers while they are attached to the stock downpipes. The rest of the system went on very smooth; lining up everything was extremely easy.

    The system sounds fantastic throughout the power band. Deep tone with burbles at idle; absolutely no rasp or drone when cruising in 6th. System is top notch.