Corsa Xtreme Valved 3.0" Cat-Back Exhaust with 4.0" Polished Slash-Cut Tips (21259) - 2024-2026 Mustang GT Coupe 5.0L
Take full advantage of the factory Active Valve Exhaust on your 2024-2026 Ford Mustang GT with the Corsa Xtreme Valved 3.0" Cat-Back Exhaust System. Engineered specifically for the 7th Generation S650 Mustang and its Coyote 5.0L V8, this premium active exhaust combines 304 stainless steel construction, Corsa-designed valves, a Double Helixx X-Pipe, custom-tuned mufflers, and Corsa's pioneering No DRONE RSC Technology.
Rather than eliminating the Mustang's factory active exhaust functionality, Corsa engineered the 21259 to integrate seamlessly with the OEM system. The result is an exhaust capable of delivering Corsa's aggressive Xtreme sound with the valves open while retaining the Mustang's ability to provide a more restrained exhaust profile when desired.
Xtreme to Touring Active Sound
The Corsa 21259 provides an Xtreme to Touring Active sound range by working with the Mustang's OEM Active Exhaust functionality. With the valves open, Corsa's precision acoustic-tuned Xtreme system delivers more than 8 dB of additional sound compared with the OEM exhaust, unleashing thunderous Coyote V8 exhaust notes during cold starts and heavy acceleration.
The active design allows the exhaust character to change with the vehicle's factory valve functionality rather than locking the Mustang into one fixed sound level. This gives drivers an aggressive exhaust experience when they want it while retaining the versatility that makes the factory Active Valve Exhaust system so useful for everyday driving.
Seamless OEM Active Exhaust Integration
Corsa designed this system specifically around Active Valve Exhaust-equipped S650 Mustang GT models. Corsa-designed valves are incorporated into the exhaust while the system integrates with the vehicle's OEM Active Exhaust functionality.
The factory Active Exhaust Module is required for installation and must be used with this system. This 21259 exhaust is intended exclusively for vehicles originally equipped with Active Valve Exhaust and is not designed for non-valved Mustang GT configurations.
Corsa-Designed Valves
At the heart of the active exhaust system are Corsa-designed valves engineered to work as part of the complete 3.0" Cat-Back assembly. These valves allow the system to retain active control over exhaust sound while pairing that functionality with Corsa's application-specific acoustic tuning.
This approach gives Active Exhaust-equipped Mustang GT owners the opportunity to upgrade the complete Cat-Back system without giving up the factory functionality that allows the exhaust character to adapt to different driving situations.
Double Helixx X-Pipe
The Corsa active Cat-Back incorporates a Double Helixx X-Pipe as part of the complete exhaust design. Combined with the 3.0" piping, Corsa-designed valves, and custom-tuned mufflers, the X-Pipe contributes to a complete exhaust architecture developed specifically around the sound and airflow characteristics of the 7th Generation Coyote V8.
No DRONE RSC Technology
Corsa's pioneering No DRONE RSC technology helps maintain a quiet, drone-free cabin during cruising even with the significant increase in exhaust character available from the Xtreme active system. The mufflers are custom tuned specifically for the 7th Generation Mustang Coyote V8 rather than relying on a universal sound-control solution.
This precision acoustic tuning allows the system to attract attention during cold starts and heavy acceleration while maintaining a more refined cabin during steady-speed cruising.
Nearly 20% Increased Exhaust Flow
Corsa utilizes a straight-through muffler construction engineered to increase exhaust flow by nearly 20%. The freer-flowing design allows Mustang owners to optimize the benefits of additional performance modifications while retaining the active sound control, acoustic tuning, and cruising characteristics built into the Corsa system.
3.0" 304 Stainless Steel Construction
The complete Cat-Back system is manufactured from premium 304 stainless steel for excellent durability and corrosion resistance. Its 3.0" exhaust design is paired with a dual rear exit configuration and engineered specifically for the S650 Mustang GT 5.0L platform.
Corsa combines the premium stainless construction with custom-tuned mufflers, its own valve design, and the Double Helixx X-Pipe to create an integrated active exhaust system rather than simply adding valves to a conventional Cat-Back.
Quad 4.0" Polished Pro-Series Slash-Cut Tips
The 21259 finishes the S650 Mustang GT's active exhaust system with quad 4.0" polished Pro-Series stainless steel exhaust tips. The dual rear exit system uses twin tips at each side for a total of four tips, matching the quad-tip appearance of Active Exhaust-equipped Mustang GT models.
Each Pro-Series tip features dual-wall stainless steel construction and a slash-cut design. The polished finish provides a clean performance appearance at the rear of the Mustang. Corsa's active S650 exhaust collection also offers multiple tip designs and polished or Black PVD finishes depending on configuration.
Engineered Specifically for the S650 Coyote V8
Every major component of the system is designed around the 7th Generation Mustang GT and its Coyote V8 engine. From the custom-tuned mufflers and precision acoustic tuning to the Corsa-designed valves, Double Helixx X-Pipe, and straight-through construction, the system is engineered as a complete package for the S650 platform.
The combination delivers a significant sound increase with the valves open, nearly 20% greater exhaust flow, active sound versatility, and a drone-free cruising experience while retaining compatibility with the Mustang's OEM Active Exhaust functionality.
American Made and Lifetime Warranty
Corsa Performance exhaust systems are engineered and manufactured in Berea, Ohio. The S650 Mustang GT Active Exhaust system is backed by Corsa's Lifetime Warranty, providing long-term support to match its premium construction and application-specific engineering.
Features
- Corsa Xtreme to Touring Active sound range
- Engineered specifically for the 7th Generation S650 Mustang GT Coyote 5.0L V8
- Designed exclusively for vehicles equipped with factory Active Valve Exhaust
- Seamlessly integrates with OEM Active Exhaust functionality
- Factory Active Exhaust Module must be used for installation
- 3.0" Cat-Back exhaust system
- Premium 304 stainless steel construction
- Dual rear exit configuration
- Corsa-designed exhaust valves
- Double Helixx X-Pipe
- Custom-tuned mufflers engineered specifically for the 7th Generation Coyote V8
- Precision acoustic-tuned Xtreme sound
- More than 8 dB of additional sound compared with the OEM exhaust with the valves open
- Thunderous exhaust notes during cold starts and heavy acceleration
- Corsa No DRONE RSC technology
- Designed to maintain a quiet, drone-free cabin during cruising
- Straight-through muffler construction
- Nearly 20% increase in exhaust flow
- Designed to help optimize the benefits of additional performance modifications
- Quad 4.0" polished Pro-Series exhaust tips
- Twin 4.0" tips at each rear exit
- Dual-wall stainless steel tip construction
- Slash-cut tip design
- Polished exhaust tip finish
- Polished and Black PVD tip finishes available within the active exhaust collection
- Engineered and manufactured in Berea, Ohio
- Backed by Corsa's Lifetime Warranty
Fitment
- 2024 Ford Mustang GT 5.0L V8 Fastback with Active Valve Exhaust
- 2025 Ford Mustang GT 5.0L V8 Fastback with Active Valve Exhaust
- 2026 Ford Mustang GT 5.0L V8 Fastback with Active Valve Exhaust
Fitment Notes
- For vehicles equipped with factory Active Valve Exhaust only.
- Must use the factory Active Exhaust Module for installation.
- Not designed for Mustang GT models without factory Active Valve Exhaust.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
