
11986CFBA S-Type Axle-Back Exhaust System Fits Select Ford Mustang 2.3L EcoBoost without Active Exhaust
This Borla Axle-Back system is designed for use on EcoBoost cars WITHOUT the Active Exhaust feature. It features the classic S-Type sound with no drone inside the vehicle and single 4 in. round carbon fiber with black anodized center tips on each muffler assembly. Borla Cat-Back and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Ultra-smooth mandrel bends ensure maximum flow and power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit.
11986CFBA S-Type Axle-Back Exhaust System Features:
- 2.5 in. diameter
- Single 4 in. round carbon fiber with black anodized center tips on each muffler assembly
- Built from premium t-304 stainless steel
- Fits vehicles with non-active exhaust
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Performance Exhaust Systems Tuned for Refined, Race-Inspired Sound
Borla S-Type exhaust systems are designed to deliver a deep, aggressive tone with a slightly more refined character than louder options in the lineup. Using the same multi-core muffler technology and precision-tuned internal cores, S-Type systems enhance the natural sound of the engine while maintaining comfort for street-driven applications. Acoustic tuning helps provide clear rpm feedback to the driver, supporting confident gear changes and throttle control. Each system is vehicle-specific to ensure a perfect fit and sound profile tailored to the platform. Ideal for enthusiasts who want a motorsport-inspired note without overwhelming volume.






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