This Borla ATAK cat-back exhaust system for the Ford Mustang GT 5.0L V8 is a 3 inch true dual design with a merge X-pipe for stronger performance and improved sound. This system is designed for vehicles without the Active Exhaust option and does not fit the Convertible. The muffler uses Polyphonic Harmonizer technology, with patented internal units of varying pipe diameters and lengths that blend multiple notes into a clean, full-bodied sound. It delivers the aggressive ATAK sound with no drone inside the vehicle and finishes with 4 inch bright chrome on T-304 stainless steel tips. Borla cat-back systems use patented straight-through, multi-core technology built from premium T-304 stainless steel, with smooth mandrel bends and CNC manufacturing for an accurate, bolt-on fit. This is a street cat-back system that mounts behind the factory catalytic converters, so it is 50-state emissions legal. Like all Borla exhaust, it is handmade in the USA.
Specifications:
- System type: ATAK cat-back exhaust
- Configuration: true dual with merge X-pipe
- Tubing diameter: 3 inch
- Material: T-304 stainless steel
- Sound level: ATAK
- Tips: 4 inch bright chrome tips
- Muffler: Polyphonic Harmonizer technology
- For vehicles without Active Exhaust
- Does not fit Convertible
- Emissions: 50-state emissions legal
- Made in the USA
Vehicle Applications:
- 2024 Ford Mustang GT
- 2025 Ford Mustang GT
- 2025 Ford Mustang GT Premium
FAQ
What Mustangs does the Borla 140961 cat-back fit?
It fits the 2024-2025 Ford Mustang GT and 2025 GT Premium with the 5.0L V8. It is for vehicles without the Active Exhaust option and does not fit the Convertible.
Is the Borla Mustang GT ATAK cat-back system street legal?
Yes. This is a street cat-back system that installs behind the factory catalytic converters, which keeps the emissions equipment intact. Borla states that its street cat-backs, rear sections, and mufflers are 50-state emissions legal.
How loud is the Borla ATAK sound level?
ATAK is Borla's loudest and most aggressive sound level, sitting above the S-Type and Touring tiers. Despite the volume, it is engineered to be drone-free inside the cabin at cruising speeds.
Does this system work with Active Exhaust?
No. The 140961 is built for Mustang GT models without the Active Exhaust option. Vehicles with Active Exhaust require the valved version of the system.
Where is this Borla exhaust made, and what warranty does it carry?
Every Borla exhaust system is handmade in the USA from T-304 austenitic stainless steel and is backed by Borla's Million-Mile Warranty.

