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Blacked Out Tips, Active Exhaust Sound Control
The CORSA 21259BLK Xtreme valved cat-back exhaust brings a stealthy black finish to the 2024-2025 Ford Mustang GT 5.0L V8 with factory Active Exhaust. A 3.0 inch mandrel bent 304 stainless system feeds twin 4.0 inch black Pro-Series tips, and the Xtreme-Touring Active sound profile lets the driver switch from a quiet cruise to an aggressive Xtreme tone on demand.
Key Features
- 3.0 inch mandrel bent 304 stainless steel cat-back system
- Twin 4.0 inch black Pro-Series tips
- Works with the factory Active Exhaust valve control system
- Xtreme-Touring Active sound profile switches between Quiet and Xtreme modes
- Patented Reflective Sound Cancellation (RSC) technology for drone free cruising
- Straight through muffler design increases exhaust flow
- 21259BLK direct-fit design retains factory valve wiring and hangers
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2024-2025 | Ford | Mustang | GT 5.0L V8, Active Exhaust |
Specifications
| Detail | Value |
|---|---|
| Part Number | 21259BLK |
| Pipe Diameter | 3.0 in |
| Tip Size | 4.0 in Twin |
| Tip Finish | Black Pro-Series |
| Sound Profile | Xtreme-Touring Active |
| Material | 304 Stainless Steel |
| UPC | 847466027260 |
What's Included
- 3.0 in valved cat-back exhaust system
- Twin 4.0 in black Pro-Series tips
- Mandrel bent stainless tubing sections
- Factory valve control retention hardware
- Installation instructions
About CORSA Performance
CORSA Performance builds exhaust systems in Berea, Ohio with a focus on active valve technology that lets drivers choose their sound profile. The 21259BLK pairs black Pro-Series tips with factory Active Exhaust compatibility on the 2024-2025 Mustang GT.
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Frequently Asked Questions
What is the 21259BLK?The CORSA 21259BLK is a 3.0 inch valved cat-back exhaust system with twin 4.0 inch black Pro-Series tips for the 2024-2025 Ford Mustang GT 5.0L V8 with Active Exhaust.
Does the 21259BLK work with Active Exhaust?Yes, the 21259BLK is designed to retain and work with the factory Active Exhaust valve control system.
What is the difference between the 21259 and 21259BLK?The 21259BLK uses black Pro-Series tips while the 21259 uses polished stainless tips; both share the same pipe and valve design.
What sound modes does the 21259BLK offer?The 21259BLK uses a Xtreme-Touring Active sound profile that ranges from a quiet cruise setting to a full Xtreme exhaust tone.
What material is the 21259BLK made from?The 21259BLK is constructed from 304 stainless steel for long term corrosion resistance.
Will the black tip finish fade over time?The black Pro-Series tips use a durable finish designed to resist fading and discoloration from heat.
Does installation require welding?No, the 21259BLK is a bolt-on cat-back system that uses factory hangers and valve wiring.
Is the 21259BLK covered by a warranty?Yes, CORSA backs the 21259BLK 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 cat-back exhaust system, noting the Active Exhaust valve harness routing.
- Test fit the new 21259BLK mandrel bent piping sections from front to rear.
- Install new hangers and clamps at each factory mounting point.
- Reconnect the Active Exhaust valve harness to the factory connector.
- Attach the twin 4.0 in black Pro-Series tips and align for even spacing.
- Lower the vehicle and start the engine to verify valve operation and check for leaks.
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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