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Gunmetal Sport Cat-Back Authority for the 2018-2023 Mustang GT 5.0L Coyote
The Corsa COR21001GNM is the gunmetal-tip variant of the Sport 3-inch cat-back exhaust for the 2018-2023 Ford Mustang GT Fastback 5.0L. Corsa's patented RSC (Reflective Sound Cancellation) technology eliminates highway drone while delivering a strong Sport exhaust note on acceleration. The COR21001GNM exits through dual gunmetal PVD-coated stainless tips that resist heat fade and discoloration, and the system bolts directly to the factory flanges with no cutting required.
Key Features
- Corsa RSC technology: Sport exhaust tone with zero highway drone
- 3-inch mandrel-bent T304 stainless steel piping
- Dual rear exit with gunmetal PVD-coated stainless tips
- Compatible with Ford's active exhaust valve on equipped models
- Direct bolt-on installation, no modifications required
- Limited lifetime warranty
- Made in USA
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2018-2023 | Ford | Mustang | GT Fastback |
| 2018-2023 | Ford | Mustang | GT Premium Fastback |
Specifications
| Detail | Value |
|---|---|
| MPN | COR21001GNM |
| Brand | Corsa Performance |
| System Type | Cat-Back |
| Sound Level | Sport |
| Pipe Diameter | 3 inches |
| Tip Style | Dual Gunmetal PVD Stainless |
| Exit | Dual Rear Exit |
| Material | T304 Stainless Steel |
| Technology | RSC (Reflective Sound Cancellation) |
| Warranty | Limited Lifetime |
| Origin | Made in USA |
| UPC | 847603014168 |
What's Included
- Corsa COR21001GNM cat-back exhaust system (all sections)
- Dual gunmetal PVD-coated stainless tips
- All hardware and gaskets for bolt-on installation
About Corsa Performance
Corsa Performance, founded in 1989 in Berea, Ohio, invented RSC exhaust technology. All systems are mandrel-bent from T304 stainless steel, assembled in the USA, and backed by a limited lifetime warranty.
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Frequently Asked Questions
What is the COR21001GNM?The Corsa COR21001GNM is the gunmetal-tip version of the Sport 3-inch cat-back exhaust for the 2018-2023 Ford Mustang GT Fastback 5.0L V8, featuring dual gunmetal PVD-coated stainless tips and RSC drone-free technology.
What is the difference between COR21001 and COR21001GNM?The COR21001GNM uses dual gunmetal PVD-coated tips instead of the polished tips on the COR21001. All performance specifications are identical.
Do the gunmetal tips fade or discolor?Corsa's gunmetal PVD coating resists heat-induced discoloration far better than spray-applied finishes, maintaining the dark metallic appearance over time.
Is the COR21001GNM drone-free?Yes. RSC technology cancels standing wave resonance at highway RPM, making the COR21001GNM comfortable for daily commuting while sounding aggressive at wide-open throttle.
Does the COR21001GNM work with Ford's active exhaust?Yes. The COR21001GNM is compatible with the factory active exhaust valve system on equipped 2018-2023 Mustang GT models.
Does this system need a tune?No. The COR21001GNM is a cat-back replacement that does not require any ECU tune or recalibration.
What is the pipe diameter on the COR21001GNM?The COR21001GNM uses a 3-inch main pipe diameter, improving exhaust flow over the factory system.
What warranty is included?Corsa Performance provides a limited lifetime warranty against defects in materials and workmanship on all exhaust systems including the COR21001GNM.
Installation Instructions
- Allow the Mustang to cool completely before starting
- Safely raise and support the vehicle on jack stands or a lift
- Unbolt the factory cat-back at the midpipe flange and remove from the rubber hangers
- Install COR21001GNM sections from the front connection rearward
- Torque all flange bolts and align the dual gunmetal tips evenly
- Lower and start the engine to verify fitment and check for exhaust leaks
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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