-9%
Click to zoom in
Unleash an Aggressive Signature Sound From Your S650 Mustang GT
The CORSA Performance 21275 is a 3 inch Xtreme cat-back exhaust system engineered for the 2024-2025 Ford Mustang GT, replacing the factory mid pipe back exhaust with free flowing stainless steel tubing and CORSA's signature Reverse Flow muffler technology. Finished with dual rear exit 4.5 inch straight cut polished tips, 21275 delivers an aggressive tone at full throttle while staying refined at cruise.
Key Features
- 3 inch mandrel bent stainless steel tubing from mid pipe to tip
- CORSA Reverse Flow muffler technology reduces backpressure while cancelling unwanted drone
- Dual rear exit configuration with 4.5 inch straight cut polished stainless tips
- Aggressive Xtreme sound level for maximum exhaust note
- Direct bolt-on installation using factory hangers
- Backed by CORSA's Limited Lifetime Warranty
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2024-2025 | Ford | Mustang | GT |
Specifications
| Detail | Value |
|---|---|
| MPN | 21275 |
| UPC | 847466027147 |
| Pipe Diameter | 3 inch |
| Tip Size / Finish | 4.5 inch straight-cut polished, dual rear exit |
| Sound Level | Xtreme |
| Material | 304 stainless steel |
| Configuration | Cat-back, dual rear exit |
What's Included
- CORSA 21275 3 inch cat-back exhaust system
- 4.5 inch straight-cut polished tips
- Mounting hardware and hangers
- Installation instructions
About CORSA Performance
CORSA Performance has spent decades engineering exhaust and intake systems that deliver both a bold sound signature and measurable performance gains. Every CORSA product is track tested and dyno proven before it reaches the market, and the company backs its intake and exhaust systems with a Limited Lifetime Warranty.
Related Parts on Our Site
- Corsa 24-25 Ford Mustang GT 5.0L Carbon Fiber Air Intake Ducts - Matte
- Corsa 24-25 Ford Mustang GT 5.0L Clear Lids & Dry Filters
Frequently Asked Questions
What is the 21275?The 21275 is a 3 inch Xtreme cat-back exhaust system from CORSA Performance for the 2024-2025 Ford Mustang GT, featuring dual rear exit 4.5 inch straight cut polished tips.
What sound level does it produce?It is tuned to CORSA's Xtreme sound level, the most aggressive tone in the Mustang GT lineup.
Does installation require cutting or welding?No, it is a direct bolt-on system that uses the factory hanger locations.
What material is it made from?The system is constructed from 304 stainless steel for corrosion resistance and long-term durability.
Will this fit a Mustang Dark Horse?No, this specific part number is designed for the 2024-2025 Mustang GT only.
What is the UPC?The UPC is 847466027147.
Does it cause drone at highway speeds?CORSA's Reverse Flow muffler technology is specifically engineered to reduce interior resonance and drone.
Does CORSA offer a warranty?Yes, CORSA backs this exhaust system with its Limited Lifetime Warranty.
Installation Instructions
- Raise and safely support the vehicle to access the factory exhaust.
- Remove the factory mid pipe back exhaust system from the hangers.
- Disconnect any factory exhaust valve actuators if equipped.
- Position the exhaust system and align with factory hanger points.
- Secure all clamps and connections, leaving fasteners loose for alignment.
- Center the exhaust and tips for even clearance before final tightening.
- Tighten all clamps and hangers to spec and inspect for leaks after startup.
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.
Catback
A catback exhaust system replaces everything from the catalytic converter back, covering the mid pipe, muffler, and tailpipe section in one bolt on upgrade. This collection covers catback systems for trucks, Jeeps, muscle cars, imports, and performance SUVs, giving you a straightforward way to improve sound, exhaust flow, and rear end styling without touching the factory catalytic converters or front pipe. Catback systems are available in stainless steel and titanium construction, with dual rear exit, single exit, and quad tip configurations, and a range of sound levels from mild touring tone to aggressive track character. Whether you want a deeper daily driver sound or a full track ready exhaust note, you will find a matched system for your platform here. What This Category Covers This collection includes complete catback exhaust systems, cat-back kits, dual rear exit systems, axle back adjacent catback upgrades, stainless steel and titanium exhaust systems, and street, tourin...
View Catback Products
CORSA Performance
CORSA Performance exhaust systems and cold air intakes for American muscle cars and trucks are stocked at Black Ops Auto Works. Shop CORSA Xtreme, Sport, and Touring cat-back exhausts, axle-back exhausts, active-valve systems, carbon fiber cold air intakes, mufflers, resonators, X-pipes, H-pipes, exhaust tips, and oil catch cans for Camaro, Corvette, Mustang, Silverado, F-150, Charger, Challenger, Durango, and Grand Cherokee Trackhawk. Every CORSA part is filterable by year, make, model, trim, engine, and drivetrain so the correct exhaust configuration ships the first time. Black Ops Auto Works carries 504 CORSA Performance SKUs across exhaust, intake, and accessory categories. What This Brand Covers CORSA Performance builds vehicle-specific exhaust systems and cold air intakes engineered for aggressive sound, controlled cabin noise, premium stainless construction, and precise fitment. The brand is best known for cat-back and axle-back systems on Camaro, Corvette, Mustang, and M...
View CORSA Performance Products
Exhaust Systems
Performance exhaust systems for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop cat-back systems, axle-back systems, turbo-back systems, headers, downpipes, mid-pipes, mufflers, resonators, catalytic converters, exhaust tips, exhaust valve controllers, oxygen sensors, exhaust brakes, and motorcycle and powersports exhausts for Mustang, Camaro, Challenger, Corvette, Silverado, and Super Duty platforms. Every product is filterable by exhaust position, material, pipe diameter, and vehicle year, make, model, and trim so the correct fitment ships the first time. Black Ops Auto Works carries 7,441 exhaust SKUs across every position of the exhaust system. What This Category Covers Exhaust upgrades change sound, appearance, and in some cases power. Exhaust fitment depends on engine, drivetrain, and factory exit position, so confirm the exact platform before ordering any exhaust component. Exhaust Position Cat-back, axle-back, turbo-back, and header-back systems e...
View Exhaust Systems Products
Ford Mustang Parts & Accessories
Ford Mustang parts and accessories for every generation are stocked at Black Ops Auto Works. Shop cold air intakes, cat-back and axle-back exhaust systems, headers, coilovers, lowering springs, sway bars, brake pads, brake rotors, big brake kits, carbon fiber body parts, wheel spacers, fuel system components, and lighting upgrades for the Fox Body, SN95, New Edge, S197, and S550/S650 platforms, including EcoBoost, GT, Mach 1, Shelby GT350, Shelby GT500, and Dark Horse. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 2,101 Ford Mustang SKUs across suspension, brakes, exhaust, intake, exterior, and drivetrain categories. What This Collection Covers The Ford Mustang has run through six generations since 1964, and each one uses different suspension geometry, brake hardware, exhaust routing, and body dimensions. This collection groups parts confirmed to fit specific Mustang generatio...
View Ford Mustang Parts & Accessories Products