The Borla ATAK axle-back exhaust for the 2005-2009 Ford Mustang GT bolts on in place of the factory rear section and delivers Borla's aggressive ATAK sound with no drone inside the vehicle. It runs 2.5 inch tubing and exits through a single 4 inch round bright chrome on T-304 stainless steel tip on each muffler assembly, and it produces a very aggressive note on Shelby GT500 vehicles. Built from premium T-304 austenitic stainless steel with patented straight-through, multi-core technology, it is handmade in the USA and backed by the Borla Million-Mile Warranty. Because it installs behind the catalytic converter, this system is 50-state emissions legal.
Specifications:
- System type: axle-back exhaust
- Sound level: ATAK (aggressive)
- Material: T-304 austenitic stainless steel
- Construction: patented straight-through, multi-core design, mandrel-bent
- Tubing: 2.5 inch
- Tips: single 4 inch round bright chrome on T-304 stainless, one per muffler
- Emissions: 50-state emissions legal
- Warranty: Borla Million-Mile Warranty
- Made in the USA
- Part number: 11806
Vehicle Applications:
- 2005 Ford Mustang GT
- 2006 Ford Mustang GT
- 2007 Ford Mustang GT
- 2008 Ford Mustang GT
- 2009 Ford Mustang GT
- 2007 Ford Mustang Shelby GT500
- 2008 Ford Mustang Shelby GT500
- 2009 Ford Mustang Shelby GT500
FAQ
Which Mustangs does this Borla axle-back fit?
It fits 2005 through 2009 Mustang GT, including the Bullitt, and 2007 through 2009 Shelby GT500 models.
How loud is the ATAK sound?
ATAK is Borla's aggressive sound level, louder than the S-Type and Touring tunings, and it produces a very aggressive note on Shelby GT500 vehicles while staying drone-free inside the cabin.
What size are the exhaust tips?
The system exits through a single 4 inch round bright chrome on T-304 stainless steel tip on each muffler assembly.
Is this exhaust 50-state emissions legal and warrantied?
Yes. It installs behind the catalytic converter so it is 50-state emissions legal, it is handmade in the USA, and it is backed by the Borla Million-Mile Warranty.

