-10%
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only) - Borla 11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only) - Borla 11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only) - Borla 11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only) - Borla 11789
Click to zoom in

Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)

Borla
BOR11789
808422117890
Axle Back
13 Units In Stock
$ 1,377.99 $ 1,229.99
FREE Ground Shipping!
$ 1,229.99

This Borla axle-back exhaust system is built for the verified 2011-2012 Ford Mustang GT application listed below. Select it by exact manufacturer part number 11789 and confirm the full engine, drivetrain, body, wheelbase, factory-exhaust, and Borla application notes before ordering.

Key Features

  • T-304 Stainless Steel Construction: Premium material resists corrosion for lasting durability and maintains peak performance over time.
  • 2.75-Inch Tubing with 4-Inch Tips: Mandrel-bent pipes and bright chrome T-304 tips ensure smooth flow, precise fit, and motorsport styling.
  • Split Rear Exit Configuration: Dual 4-inch angled cut tips provide balanced exhaust flow and a custom look from factory hangers.
  • Straight-Through Muffler Design: Patented multi-core technology increases exhaust velocity for added power and the aggressive Borla exhaust note.
  • Direct bolt-on replacement using factory mounts; no cutting or welding required.
  • Bolt-on design fits in under 30 minutes with basic hand tools; remove stock axle-back section first.

Fitment

Years Make Model Application
2011-2012 Ford Mustang GT
2012 Ford Mustang Boss 302

Specifications

Manufacturer Borla
Manufacturer Part Number 11789
Product Type Axle Back
Sound Profile S-Type
Position rear
Fitment Type Vehicle specific, verify the complete application

What's Included

One new Borla product identified by manufacturer part number 11789. Clamps, hangers, gaskets, tips, pipes, tools, and companion parts are included only when expressly listed for this exact part number.

About Borla

Borla develops stainless-steel exhaust systems, mufflers, tips, pipes, and related components for vehicle-specific and universal performance applications. Product selection remains exact-application and exact-part-number specific.

Related Borla Products

Browse the Borla collection for related exhaust systems and components.

Frequently Asked Questions

Will this Borla part fit my 2011-2012 Ford Mustang GT?
That application is listed, but confirm the engine, drivetrain, body or cab style, wheelbase, factory exhaust layout, tip opening, and every Borla application note before ordering.

Will this change require an engine tune?
A cat-back, axle-back, tip, muffler, or post-catalyst component usually does not require tuning, but confirm the exact application, emissions configuration, oxygen-sensor locations, and local requirements before installation.

What should I inspect before installation?
Check the shipping carton and components against the exact part number, then inspect clamps, hangers, gaskets, mating flanges, clearances, tip alignment, and required reused factory hardware before removing the original exhaust.

Installation Instructions

Follow the current Borla instructions and vehicle service information for this exact part number. Let the exhaust cool, support the vehicle safely, compare all parts before removal, protect sensors and wiring, use the specified clamps and torque values, align all joints and tips without preload, confirm body and suspension clearance, check for leaks, and retorque after the first heat cycles. Professional installation is recommended.

Axle Back

Axle Back

Shop axle-back exhaust systems and rear exhaust sections at Black Ops Auto Works. Compare Borla, CORSA, AWE, MBRP, MagnaFlow, Dinan and other listed options for a change in exhaust character and rear-end appearance. Choose the sound level, valve arrangement and tip design that suit your vehicle and the rest of its exhaust.Choose the Rear Section for Your ProjectAn axle-back normally focuses the change on the rear exhaust section, while a cat-back replaces a broader portion of the system. Use the exact kit’s connection points and contents to understand what stays on the vehicle and what changes. Factory routing and aftermarket terminology vary by application.For an existing modified exhaust, include the current mid-pipe, resonators and other changes when comparing sound clips and installation requirements. The rear section is one part of the complete sound you will hear.Compare Sound Character and Cruising ComfortBorla offers different sound levels such as S-Type and ATAK where avail...

View Axle Back Products
Borla

Borla

Shop Borla exhaust systems by exact vehicle fitment and manufacturer part number, including ATAK, S-Type and Touring cat-back and axle-back systems, T-304 stainless-steel mufflers, exhaust tips, X-pipes, mid-pipes, resonators, clamps and universal components. Use the Year/Make/Model selector or search the Borla part number to compare the correct exhaust options for your car, truck or SUV. Borla Performance Exhaust Systems Borla engineers vehicle-specific exhaust systems for sound, flow and precise fitment. Many Borla cat-back and axle-back systems use T-304 austenitic stainless steel, mandrel-bent tubing and application-specific muffler technology. Borla backs qualifying products with its Million-Mile Warranty. Construction, sound, tip finish, included hardware, warranty eligibility and emissions notes vary by part number, so verify the exact product listing before ordering. Choose Your Borla Exhaust Sound Borla ATAK ATAK is Borla's most aggressive sound level for drivers who want m...

View Borla Products
Exhaust Systems

Exhaust Systems

Shop performance exhaust systems, cat-backs, axle-backs, headers, mufflers, and exhaust tips at Black Ops Auto Works. Compare options from Borla, CORSA, Solo Performance, AWE, MagnaFlow, MBRP, Kooks, Akrapovic, Invidia, and other brands. Find complete systems and individual components for muscle cars, performance SUVs, trucks, imports, and European vehicles. Cat-Back and Axle-Back Exhaust Systems Choose the exhaust section that matches your project. Cat-back systems generally replace the exhaust downstream of the catalytic converter, while axle-back systems replace the rear section. Exact connection points and package contents vary by vehicle. Compare muffler design, pipe diameter, exit location, tip configuration, and compatibility with existing exhaust components. Exhaust for HEMI, SRT, Trackhawk, and Hellcat Vehicles This collection includes exhaust options for selected Jeep Grand Cherokee SRT and Trackhawk, Dodge Durango SRT and Hellcat, Dodge Charger, Chrysler 300, and Ram appl...

View Exhaust Systems Products
Ford Mustang Parts & Accessories

Ford Mustang Parts & Accessories

Shop Ford Mustang parts for exhaust projects, body changes, brake service and chassis work at Black Ops Auto Works. Compare CORSA exhaust references, Anderson Composites panels, Baer or DBA brake options and suspension components. Build your order around the exact Mustang generation, engine, body, transmission and installed equipment.CORSA Exhaust and Engine-Specific ProjectsCORSA references include 2020–2022 Shelby GT500 active cat-back systems with different tip configurations. Match factory valve equipment, body and complete system coverage before comparing finishes. BBK headers, intake and MAF references span other engines and production ranges. Ford modular intake, Boundary oil-pump and Mishimoto EcoBoost intercooler references require their own exact engine and installation checks.Carbon Fiber, Fiberglass and Exterior DetailsAnderson Composites fenders, hoods and bumper inserts distinguish production ranges, materials and body applications. APR plate backing, S550 quarter louv...

View Ford Mustang Parts & Accessories Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×