Borla ATAK Axle-Back Exhaust System Borla 11939 for 2015-2023 Ford Mustang

For convertible, EXCEPT vehicles with Active Valve Exhaust (4 tips). Features bright chrome on T-304 stainless steel tips. Borla(r) Cat-Back(tm) & Axle-Back multi-core technology is designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit. Best of all, Borla(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. ATAK Axle-Back Exhaust System 2015-2023 Ford Mustang 2.3L 4 Cyl.. EcoBoost/ 2015-2017 3.7L V6, Automatic/ Manual Transmission Rear Wheel Drive 2 Door Convertible EXCEPT Vehicles Equipped With Active Exhaust (4 tips). 2015-2023 Ford Mustang 2.3L 4 Cyl.. EcoBoost/ 2015-2017 3.7L V6, Automatic/ Manual Transmission Rear Wheel Drive 2 Door Convertible EXCEPT Vehicles Equipped With Active Exhaust (4 tips).

• EXCEPT vehicles with Active Valve Exhaust System (4 tips)

Upgrade the sound and performance of your compatible Ford Mustang with the Borla ATAK Axle-Back Exhaust System, Part Number 11939. Designed for 2015-2023 Mustang models equipped with the 2.3L 4-cylinder EcoBoost engine and 2015-2017 models with the 3.7L V6 engine, this rear-section exhaust system is compatible with automatic or manual transmissions, rear-wheel drive, and two-door convertible configurations. It is specifically designed for vehicles without the factory Active Valve Exhaust System with four tips.

Built from premium T-304 stainless steel, the Borla ATAK system provides excellent corrosion resistance, durability, and long-term performance. Bright chrome exhaust tips provide a clean, distinctive appearance, while smooth mandrel bends help maintain consistent exhaust flow. Borla multi-core technology is engineered to increase exhaust velocity, helping unlock performance potential, throttle response, driving excitement, and fuel efficiency. The ATAK exhaust delivers Borla's aggressive Sound of Power while maintaining the precise fit and finish expected from a leading performance exhaust manufacturer.

Computer-controlled CNC manufacturing supports accurate installation and dependable alignment with the original mounting locations. This axle-back system is intended for enthusiasts seeking a more authoritative exhaust note and premium construction without replacing the vehicle's complete exhaust system. Borla backs the system with a Million-Mile Warranty, reflecting its commitment to quality and durability. Verify the vehicle's engine, body style, drivetrain, and factory exhaust configuration before ordering.

Product Specifications & Technical Data

• Brand: Borla
• Part Number: 11939
• Product Type: ATAK axle-back exhaust system
• Application: 2015-2023 Ford Mustang 2.3L EcoBoost
• Additional Application: 2015-2017 Ford Mustang 3.7L V6
• Vehicle Configuration: Rear-wheel drive, two-door convertible
• Construction: T-304 stainless steel with bright chrome tips
• Manufacturing: Mandrel-bent tubing and computer-controlled CNC fabrication

What's Included

One Borla ATAK Axle-Back Exhaust System with the required rear-section components and bright chrome exhaust tips. Installation hardware and documentation are included as supplied by the manufacturer.

Fitment

Fits select 2015-2023 Ford Mustang models. Excludes vehicles equipped with the Active Valve Exhaust System with four tips. Confirm exact fitment against the vehicle's engine, transmission, body style, drivetrain, and factory exhaust equipment.

Features:

• T-304 Stainless Steel Construction: Provides superior corrosion resistance, strength, and long-term durability compared with lower-grade exhaust materials.
• ATAK Sound Profile: Delivers an aggressive, performance-oriented exhaust tone with Borla's distinctive Sound of Power.
• Multi-Core Technology: Helps increase exhaust velocity to support improved power potential, throttle response, and driving excitement.
• Mandrel-Bent CNC Manufacturing: Promotes smooth exhaust flow and accurate fitment with consistently formed tubing and precision fabrication.

Fitments:
2015 Ford Mustang EcoBoost
2015 Ford Mustang EcoBoost Premium
2015 Ford Mustang V6
2016 Ford Mustang EcoBoost
2016 Ford Mustang EcoBoost Premium
2016 Ford Mustang V6
2017 Ford Mustang EcoBoost Premium
2017 Ford Mustang V6
2018 Ford Mustang EcoBoost
2018 Ford Mustang EcoBoost Premium
2019 Ford Mustang EcoBoost
2019 Ford Mustang EcoBoost Premium
2020 Ford Mustang EcoBoost
2020 Ford Mustang EcoBoost Premium
2021 Ford Mustang EcoBoost
2021 Ford Mustang EcoBoost Premium
2022 Ford Mustang EcoBoost
2022 Ford Mustang EcoBoost Premium
2023 Ford Mustang EcoBoost
2023 Ford Mustang EcoBoost Premium

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1