Borla 11985BC S-Type Axle-Back Exhaust for 24-26 Ford Mustang GT 5.0L V8

Vehicle Fitment

• 2024-2026 Ford Mustang GT 5.0L V8 Coupe & Convertible -- with Active Exhaust

Fitment Notes

• For vehicles WITH factory Active Valve Performance Exhaust ONLY
• Retains factory active exhaust valve functionality
• Fits both automatic and manual transmission
• Fits both Coupe and Convertible body styles
• Does NOT fit Mustang Dark Horse

Features

• S-Type sound level -- moderate, full-bodied tone with no drone
• Polyphonic Harmonizer technology for clean, rich exhaust notes
• Straight-through and patented multi-core design for increased power
• 4" round black chrome tips on T-304 stainless steel (quad)
• T-304 stainless steel construction throughout
• Mandrel-bent tubing for maximum exhaust flow
• CNC-manufactured for precision bolt-on fitment
• Made in USA
• Million-Mile Warranty

Specifications

• Part Number: 11985BC
• Brand: Borla
• System Type: Axle-Back
• Sound Level: S-Type
• Pipe Diameter: 2.5" into muffler; 2.5" and 3" out
• Tip Size: 4" Round Rolled Angle-Cut
• Tip Finish: Black Chrome on T-304 Stainless Steel
• Tip Quantity: Quad (dual split rear exit)
• Muffler Length: 9.5"
• Material: T-304 Stainless Steel
• Active Exhaust Valves: Yes -- retains factory function

Included Components

• Borla S-Type axle-back muffler assemblies (pair)
• 4" black chrome exhaust tips (4)
• Mounting hardware and clamps
• Installation instructions

Product Description

The Borla 11985BC is an S-Type axle-back exhaust system for the 2024-2025 Ford Mustang GT 5.0L V8 equipped with the factory Active Valve Performance Exhaust. The mufflers feature Borla's patented Polyphonic Harmonizer technology, which uses pipes of varying diameters and lengths to create multiple exhaust notes that harmonize for a clean, rich, full-bodied tone with no interior drone. The system retains full factory active exhaust valve functionality. Built entirely from premium T-304 stainless steel with mandrel-bent tubing and CNC-manufactured components, the 11985BC delivers improved exhaust flow and added horsepower through Borla's straight-through multi-core design. Quad 4" black chrome tips in a dual split rear exit configuration complete the aggressive appearance. Do not use Borla Stainless Steel Polish on black chrome tips -- clean with hot water and a microfiber cloth. Also available with polished chrome tips (11985) and carbon fiber tips (11985CFBA). Fits both Coupe and Convertible with automatic or manual transmission. Made in the USA and backed by Borla's Million-Mile Warranty.