Borla 11789 S-Type Axle-Back Exhaust for 11-12 Ford Mustang GT/Boss 302

Vehicle Fitment

• 2011-2012 Ford Mustang GT (5.0L V8, RWD)
• 2012 Ford Mustang Boss 302 (5.0L V8, RWD)

Features

• Borla S-Type stainless steel axle-back exhaust system engineered for exact fitment
• Mandrel-bent T-304 stainless steel tubing for enhanced exhaust flow and corrosion resistance
• S-Type performance sound - deeper and more aggressive than stock without excessive drone
• Straight-through muffler design reduces backpressure for improved throttle response
• Single split rear exit with polished 4.5" stainless steel tips for a sporty appearance
• All-welded construction for long-term strength and durability
• Direct bolt-on installation using OEM hangers and included hardware
• Backed by Borla's Million-Mile Warranty

Specifications

• Part Number: 11789
• Brand: Borla
• System Type: Axle-Back Exhaust
• Material: T-304 stainless steel
• Pipe Diameter: 2.75"
• Tip Diameter: 4.5" polished stainless steel
• Exit Style: Single split rear exit
• Sound Profile: S-Type (moderate/aggressive tone)
• Drivetrain: Rear-wheel drive (RWD)

Included Components

• 1x Axle-back exhaust system
• 2x Polished stainless steel exhaust tips
• Installation hardware

Product Description

The Borla 11789 S-Type axle-back exhaust system is engineered specifically for 2011-2012 Ford Mustang GT and the 2012 Boss 302 with the 5.0 L V8 and rear-wheel drive. Constructed from premium T-304 stainless steel with mandrel-bent tubing and a straight-through muffler design, this system enhances exhaust flow and delivers a more engaging performance sound than the factory exhaust. The S-Type tone is deeper and more aggressive than stock, yet tuned to minimize unwanted cabin drone.

This axle-back unit installs using existing factory hangers and included hardware for straightforward bolt-on fitment. The polished 4.5" stainless steel tips with a single split exit provide a performance-oriented appearance at the rear of the vehicle. Backed by Borla's Million-Mile Warranty, the 11789 delivers improved throttle response and a richer exhaust note that elevates the driving experience on both street and highway applications.