The Borla ATAK axle-back system replaces the factory mufflers and rear piping with 2.75 in mandrel-bent T-304 stainless tubing and two race-inspired ATAK mufflers, delivering Borla's most aggressive sound level. Acoustically-Tuned Applied Kinetics tuning shapes the muffler cores for a hard exterior tone while keeping the cabin free of harsh resonance. It finishes in a pair of 4.5 in polished stainless round rolled, angle-cut tips and installs as a direct bolt-on using factory hardware.
| Type | ATAK axle-back exhaust (aggressive sound) |
| Position | Rear (replaces mufflers and rear piping) |
| Pipe Diameter | 2.75 in |
| Material | T-304 stainless steel |
| Tips | Two 4.5 in round rolled, angle-cut |
| Finish | Polished stainless |
| Sound Level | ATAK (most aggressive) |
| Warranty | Borla Million-Mile Warranty |
| Part Number | 11799 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2012 | Ford | Mustang | Shelby GT500 |
