Borla 11984 ATAK Axle-Back Exhaust System for Mustang GT - 2.5 5.0L

The Borla 11984 ATAK Axle-Back Exhaust System is engineered for 5.0L Mustang GT models without factory Active Exhaust, delivering aggressive sound and performance gains through a 2.5-inch diameter mandrel-bent design. This premium exhaust system fits both coupe and convertible body styles.

Polyphonic Harmonizer Technology:

Borla's patented Polyphonic Harmonizer utilizes pipes of varying diameters and lengths within the muffler to create multiple exhaust notes that harmonize together. The result is a clean, rich, full-bodied sound with the aggressive ATAK (Acoustically-Tuned Applied Kinetics) sound level—delivering maximum volume and excitement with no interior drone.

Performance Features:

• Straight-through multi-core design unleashes hidden horsepower
• Increased exhaust velocity improves power output and throttle response
• Ultra-smooth mandrel bends maximize exhaust flow and performance
• Precision CNC manufacturing ensures accurate, direct-fit installation
• May improve fuel economy through optimized exhaust scavenging

Premium Construction:

• Built entirely from premium T-304 stainless steel for superior corrosion resistance
• 4-inch bright chrome on T-304 stainless steel tips included
• Superior durability compared to T-400 series stainless steel (such as 409)
• Backed by Borla's Million-Mile Warranty

Borla systems are also available with black chrome tips and carbon fiber tip options for custom styling. Experience the distinctive Borla Sound of Power from the world's most experienced exhaust brand.