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More Power, Less Weight for the Supercharged GT500
The CORSA 14321BLK Sport axle-back exhaust adds up to 16 horsepower and 21 lb-ft of torque to the 2013-2014 Ford Mustang Shelby GT500 5.8L V8 while shedding roughly 6 pounds compared to the factory system. A 3.0 inch mandrel bent system feeds twin 4.0 inch black PVD Pro-Series tips for an aggressive Sport level exhaust note backed by Corsa's drone free Reflective Sound Cancellation technology.
Key Features
- 3.0 inch mandrel bent stainless steel axle-back system
- Twin 4.0 inch black PVD Pro-Series tips
- Adds up to 16 horsepower and 21 lb-ft of torque
- Reduces weight by approximately 6 pounds versus factory
- Sport sound level with patented Reflective Sound Cancellation (RSC) technology
- Straight through muffler design increases exhaust flow
- 14321BLK direct-fit design requires no cutting or welding
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2013-2014 | Ford | Mustang | Shelby GT500 5.8L V8 |
Specifications
| Detail | Value |
|---|---|
| Part Number | 14321BLK |
| Pipe Diameter | 3.0 in |
| Tip Size | 4.0 in Twin |
| Tip Finish | Black PVD |
| Sound Level | Sport |
| Horsepower Gain | +16 HP |
| Torque Gain | +21 lb-ft |
| Weight Change | -6 lbs |
| UPC | Not published by manufacturer |
What's Included
- 3.0 in axle-back exhaust system
- Twin 4.0 in black PVD Pro-Series tips
- Mandrel bent stainless tubing sections
- Mounting hardware and clamps
- Installation instructions
About CORSA Performance
CORSA Performance builds exhaust systems in Berea, Ohio focused on measurable power gains and reduced weight. The 14321BLK brings both benefits to the supercharged Shelby GT500 along with Corsa's signature drone free sound.
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Frequently Asked Questions
What is the 14321BLK?The CORSA 14321BLK is a 3.0 inch Sport axle-back exhaust system with twin 4.0 inch black PVD tips for the 2013-2014 Ford Mustang Shelby GT500 5.8L V8.
How much horsepower does the 14321BLK add?The 14321BLK adds up to 16 horsepower and 21 lb-ft of torque over the factory exhaust system.
Does the 14321BLK reduce vehicle weight?Yes, the 14321BLK weighs approximately 6 pounds less than the factory axle-back system.
What sound level is the 14321BLK?The 14321BLK is tuned to a Sport sound level for an aggressive but livable exhaust tone.
Does the 14321BLK cause drone at highway speed?No, Corsa's Reflective Sound Cancellation technology is engineered to eliminate drone during highway cruise.
What material is the 14321BLK made from?The 14321BLK is constructed from stainless steel for long term corrosion resistance.
Does installation require welding?No, the 14321BLK is a bolt-on axle-back system that uses factory hangers and clamps.
Is the 14321BLK covered by a warranty?Yes, CORSA backs the 14321BLK with a limited lifetime warranty against manufacturing defects.
Installation Instructions
- Raise and safely support the vehicle on a lift or jack stands.
- Remove the factory axle-back exhaust section at the mid-pipe connection.
- Test fit the new 14321BLK mandrel bent piping sections at the axle-back connection.
- Install new hangers and clamps at each factory mounting point.
- Attach the twin 4.0 in black PVD tips and align for even spacing.
- Tighten all clamps and verify the system does not contact the frame or body.
- Lower the vehicle and start the engine to check for leaks or rattles.
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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