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Unleash the Full Growl of Your 5.0 GT
The 2015 to 2017 Mustang GT Fastback already sounds good from the factory, but the B919-C919 catback system from Thermal R&D takes it to another level. Full 3 inch T304 stainless steel tubing and True Helmholtz Technology combine to deliver a deep, resonant exhaust note with zero highway drone, all through a simple bolt on installation.
Key Features
- 3 inch mandrel bent T304 stainless steel tubing
- True Helmholtz Technology eliminates cabin drone at highway speed
- Mill finish tubing and resonator for a clean factory-style look
- 4.5 inch angle tips available in polished or ceramic coated finish
- Bolt on installation, no cutting or welding required
- Guaranteed to improve the sound, look, and performance of your Mustang
- Built in the USA and backed by a lifetime warranty
Fitment Table
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2015-2017 | Ford | Mustang | GT Fastback |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Numbers | B919-C919 (polished tips), B919-C919-C (ceramic coated tips) |
| Brand | Thermal R&D (Thermal Research and Development) |
| System Type | Catback exhaust |
| Pipe Diameter | 3 inch |
| Material | T304 stainless steel, mandrel bent |
| Tip Size | 4.5 inch angle tips |
| Tubing Finish | Mill finish tubing and resonator |
| Installation | Bolt on, no cutting or welding required |
| Body Style Fitment | Fastback only, will not fit convertible models |
| Warranty | Limited lifetime manufacturer warranty |
What's Included
- Complete Thermal R&D 3 inch catback exhaust system
- 4.5 inch angle exhaust tips in your chosen finish
- OEM style mounting hardware and clamps
- Installation instructions
About Thermal R&D
Thermal R&D builds its exhaust systems in the USA using T304 stainless steel paired with proprietary Helmholtz resonator tuning. The B919 series brings that same drone free approach to the S550 Mustang GT, giving fastback owners a direct bolt on upgrade backed by a lifetime warranty.
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FAQ
What is the B919-C919?The B919-C919 is the polished tip version of the Thermal R&D 3 inch catback exhaust system built for the 2015 to 2017 Ford Mustang GT Fastback.
What is the difference between the B919-C919 and B919-C919-C?The B919-C919 comes with polished stainless steel tips while the B919-C919-C comes with black ceramic coated tips, the underlying 3 inch catback system is identical.
Will this system fit a Mustang GT convertible?No, this system is designed for fastback models only and will not fit convertible models.
Does this exhaust cause drone at highway speed?No, True Helmholtz Technology is specifically tuned to remove highway drone while keeping an aggressive tone under throttle.
Do I need to modify my Mustang to install this system?No cutting or welding is required, the system bolts on using factory connection points.
Can I install this exhaust system myself?Most owners with basic hand tools and a way to safely lift the vehicle can complete the install in an afternoon.
Will this system also fit newer Mustang GT models?This specific system is built for 2015 to 2017 models, Thermal R&D offers the B918-C918 system for 2018 to 2023 Mustang GT Fastback.
What is your return policy on this exhaust system?Unused systems in original packaging can be returned within our standard return window, please contact us first for return instructions.
Install Instructions
- Safely lift and support the Mustang on jack stands.
- Apply penetrating fluid to the factory exhaust clamps and hanger isolators.
- Disconnect the factory catback system at the mid pipe connection and unclip the hangers.
- Remove the factory exhaust system from the vehicle.
- Install the B919 series catback system at the mid pipe connection, leaving clamps hand tight.
- Secure the system onto the factory hanger locations and check tip alignment.
- Torque all clamps to specification.
- Start the engine and inspect every joint for exhaust leaks.
Prop 65 Warning
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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