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Full-System Coyote Dominance for 2018-2020 Ford Mustang GT and Bullitt Owners
The Corsa Performance COR21040 Cat-Back Exhaust unleashes the complete potential of your 2018-2020 Ford Mustang GT and Bullitt 5.0L Coyote V8 with a full 3-inch mandrel-bent T304 stainless steel system. Corsa's patented RSC Technology delivers an aggressive, deep exhaust tone under hard acceleration while eliminating interior drone at highway speeds. The dual rear exit layout with polished 4-inch Pro-Series tips gives your Mustang a clean, premium exhaust presence from any angle. This is a bolt-on installation that requires no tuning, cutting, or welding, making COR21040 one of the most straightforward performance upgrades for S550 Mustang owners.
Key Features
- Corsa RSC Technology for a drone-free, aggressive Coyote V8 sound
- 3-inch mandrel-bent T304 stainless steel full cat-back system
- Dual rear exit with polished 4-inch Pro-Series tips
- Bolt-on installation, no tune or modifications required
- Corsa Sport sound level: aggressive without being abusive on long drives
- Limited lifetime warranty, made in the USA
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2018-2020 | Ford | Mustang | GT |
| 2018-2020 | Ford | Mustang | GT Premium |
| 2020 | Ford | Mustang | Bullitt |
Specifications
| Detail | Value |
|---|---|
| Part Number | COR21040 |
| MPN | COR21040 |
| Finish | Polished Stainless |
| Tip Size | 4.0 inch Polished Pro-Series |
| Pipe Diameter | 3.0 inch |
| Material | T304 Stainless Steel |
| System Type | Cat-Back Exhaust |
| Exit | Dual Rear Exit |
| Fitment | 2018-2020 Ford Mustang GT 5.0L V8 |
| Prop 65 | Yes |
| Warranty | Limited Lifetime |
| Made In | USA |
| UPC | 847442021424 |
What's Included
- Complete cat-back exhaust system
- Polished 4-inch Pro-Series exhaust tips (dual)
- OEM-style hangers and connection hardware
- Corsa installation instructions
About Corsa Performance
Since 1989, Corsa Performance has been the benchmark for drone-free performance exhaust systems. Built in Berea, Ohio from mandrel-bent T304 stainless steel, every Corsa system is backed by a limited lifetime warranty and engineered using patented RSC Technology.
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Frequently Asked Questions
What is the COR21040?The COR21040 is a Corsa Performance full cat-back exhaust system for the 2018-2020 Ford Mustang GT and Bullitt 5.0L V8. It features a 3-inch mandrel-bent T304 stainless steel design with dual rear exit and polished 4-inch Pro-Series tips, using patented RSC Technology for a drone-free aggressive sound.
What Mustang fitments does COR21040 cover?The COR21040 fits the 2018-2020 Ford Mustang GT, GT Premium, and 2020 Bullitt with the 5.0L Coyote V8. It does not fit EcoBoost or Shelby GT500 models.
How is COR21040 different from COR21039BLK?The COR21039BLK is an axle-back system that replaces only the rear mufflers. The COR21040 is a full cat-back system replacing from the catalytic converters back, offering greater flow improvement and sound enhancement.
Is the COR21040 drone-free?Yes. Corsa's patented RSC Technology is engineered specifically to eliminate interior drone at highway speeds while producing a strong exhaust note under acceleration.
Does installing the COR21040 require removing the midpipe?Yes. A full cat-back system includes the connection at the catalytic converter exit. All required hardware is included for a clean bolt-on installation.
Will I lose any power or performance with the COR21040?No. The COR21040 is engineered to improve exhaust flow compared to the factory system. You can expect slightly improved throttle response and sound with no negative power effects.
Does this exhaust work with the active exhaust system on the Mustang GT?The COR21040 replaces the factory passive exhaust. Check Corsa's fitment notes to confirm compatibility with any factory active exhaust valve systems on your specific model year.
Is the COR21040 CARB compliant?No. This system is not CARB compliant and is for off-highway use in California. It is street legal in all other states.
Installation Instructions
- Safely raise the Mustang on jack stands or a vehicle lift and allow the exhaust to cool.
- Disconnect the factory exhaust system at the catalytic converter exit flanges.
- Remove all stock hangers and lower the factory cat-back assembly from the vehicle.
- Install the Corsa mid-pipe connecting to the catalytic converter outlets using the provided hardware.
- Route the muffler assembly and attach using OEM hanger locations.
- Position the polished Pro-Series tips so they are centered evenly in the rear bumper cutouts.
- Tighten all connection clamps and verify hanger positions are secure.
- Start the vehicle and inspect for any exhaust leaks before driving.
Prop 65 Warning: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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