Corsa Sport Valved 3.0" Axle-Back with 4.5" Polished Slash Tips (21267) - 2024-2026 Ford Mustang Dark Horse 5.0L
Give your 2024-2026 Ford Mustang Dark Horse a more aggressive exhaust note while retaining the flexibility of the factory Active Exhaust system with the Corsa Sport Valved 3.0" Axle-Back Exhaust. Engineered specifically for the seventh-generation S650 Mustang Dark Horse 5.0L V8, the 21267 combines Corsa-designed valves, custom-tuned mufflers, premium 304 stainless steel construction, and Corsa No Drone RSC Technology with quad 4.5" polished Pro-Series slash-cut tips.
Designed to integrate seamlessly with the Mustang's OEM Active Exhaust functionality, the Corsa Sport system delivers more than 5 dB of additional exhaust volume beyond the factory system with the valves open. The result is a noticeably more aggressive exhaust note during cold starts and heavy acceleration while maintaining a quiet, drone-free cabin during cruising.
Sport to Touring Active Exhaust Sound
The Corsa 21267 provides a Sport to Touring Active sound range, allowing the Mustang Dark Horse to retain the versatility of its factory Active Exhaust system while adding the distinct character of a Corsa performance exhaust.
With the valves open, the system delivers more than 5 decibels of additional volume beyond the OEM exhaust. Cold starts and heavy acceleration become more aggressive, giving the Dark Horse's 5.0L V8 a stronger and more commanding exhaust presence.
When a quieter driving experience is desired, the valved system works with the Mustang's factory Active Exhaust functionality to provide a more restrained exhaust character. This gives the driver the flexibility to enjoy aggressive performance sound without being locked into maximum exhaust volume at all times.
Seamless OEM Active Exhaust Integration
Corsa engineered the 21267 specifically around the factory Active Exhaust system found on the Mustang Dark Horse. Corsa-designed valves integrate with the OEM Active Exhaust functionality, maintaining the adjustability and sound control built into the vehicle from the factory.
The factory Active Exhaust Module is required for installation. This system is intended for Dark Horse models originally equipped with factory exhaust valves and must use the factory Active Exhaust Module to operate correctly.
Custom-Tuned Mufflers for the S650 Coyote V8
Corsa developed custom-tuned mufflers specifically around the sound characteristics of the seventh-generation Mustang Coyote V8. Rather than simply increasing volume, the system is precision acoustic-tuned to create a stronger performance exhaust character while retaining the refinement expected from a premium valved exhaust system.
The Sport calibration is designed to capture attention during startup and acceleration while the active exhaust functionality allows the system to become more subdued when desired.
Corsa No Drone RSC Technology
The Corsa 21267 incorporates the company's pioneering No Drone RSC Technology to control undesirable frequencies and resonance inside the cabin. This allows the aggressive sound of the 5.0L V8 to remain prominent during acceleration while preserving a quiet, comfortable cruising experience.
For a street-driven performance car like the Dark Horse, this combination provides the best of both worlds: a more aggressive exhaust note when the throttle is opened and a refined cabin when cruising at steady speeds.
Nearly 20% Increased Exhaust Flow
Corsa uses straight-through muffler construction to improve exhaust flow compared with the factory system. The 21267 increases flow by nearly 20%, helping reduce restriction and allowing owners to better take advantage of other performance modifications.
This increased-flow design makes the system an excellent fit for enthusiasts who plan to continue modifying their Dark Horse while still retaining factory Active Exhaust functionality and a refined driving experience.
Premium 304 Stainless Steel Construction
The Corsa 21267 is manufactured from premium 304 stainless steel for excellent durability and corrosion resistance. This high-quality material is well suited for long-term exposure to exhaust heat, moisture, road debris, and changing weather conditions.
The system is engineered and manufactured in Berea, Ohio, combining American manufacturing with Corsa's long-standing experience developing performance exhaust systems for modern Mustangs.
3.0" Axle-Back Design
The 21267 features a 3.0" Axle-Back configuration with a dual rear exit. This design replaces the rear exhaust components while integrating with the existing exhaust system and factory Active Exhaust controls.
The combination of 3.0" piping, straight-through muffler construction, Corsa-designed valves, and application-specific acoustic tuning provides the Dark Horse with increased exhaust flow and a more aggressive sound without requiring a complete Cat-Back replacement.
Quad 4.5" Polished Pro-Series Slash Tips
The Corsa 21267 finishes the Dark Horse's exhaust with four large 4.5" polished Pro-Series tips. Twin tips are positioned at each rear exit, maintaining the aggressive quad-tip appearance of the Mustang while adding a premium Corsa finish.
Each Pro-Series tip features dual-wall construction with a slash-cut profile. The polished finish provides a bright, clean performance appearance that complements the Dark Horse's aggressive rear styling and distinguishes this system from the straight-cut and Black PVD configurations available in the same exhaust family.
Engineered Specifically for the Mustang Dark Horse
This system is designed specifically for the 2024-2026 Ford Mustang Dark Horse 5.0L V8 Fastback equipped with factory exhaust valves. Its combination of active sound control, application-specific muffler tuning, increased exhaust flow, and No Drone RSC Technology provides a comprehensive rear exhaust upgrade without sacrificing the factory Active Exhaust functionality.
From aggressive cold starts to stronger exhaust sound under heavy acceleration and a comfortable cruising experience, the 21267 gives Dark Horse owners increased sound and flow while preserving the versatility that makes the factory valved system so useful.
Made in the USA with a Lifetime Warranty
Corsa Performance exhaust systems for the seventh-generation Mustang are engineered and manufactured in Berea, Ohio. The 21267 is backed by Corsa's Lifetime Warranty, reflecting the company's commitment to long-term quality, durability, and performance.
Features
- Designed specifically for 2024-2026 Ford Mustang Dark Horse 5.0L V8 Fastback models
- For vehicles equipped with factory exhaust valves
- 3.0" Axle-Back exhaust system
- Sport to Touring Active sound level
- More than 5 dB louder than the OEM exhaust with the valves open
- Corsa-designed exhaust valves
- Seamlessly integrates with OEM Active Exhaust functionality
- Custom-tuned mufflers developed specifically for the seventh-generation Mustang Coyote V8
- Corsa No Drone RSC Technology
- Designed for aggressive cold starts and heavy acceleration with a quiet, drone-free cabin while cruising
- Straight-through muffler construction
- Nearly 20% increased exhaust flow
- Premium 304 stainless steel construction
- Dual rear exit configuration
- Quad-tip exhaust layout
- Four 4.5" polished Pro-Series exhaust tips
- Dual-wall tip construction
- Slash-cut tip design
- Polished exhaust tip finish
- Engineered and manufactured in Berea, Ohio
- Made in the USA
- Backed by Corsa's Lifetime Warranty
Fitment
- 2024 Ford Mustang Dark Horse 5.0L V8 Fastback with Factory Active Exhaust
- 2025 Ford Mustang Dark Horse 5.0L V8 Fastback with Factory Active Exhaust
- 2026 Ford Mustang Dark Horse 5.0L V8 Fastback with Factory Active Exhaust
Fitment Notes
- Designed specifically for Mustang Dark Horse models equipped with factory exhaust valves.
- Must use the factory Active Exhaust Module for installation.
- Retains integration with OEM Active Exhaust functionality.
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