Corsa Xtreme Valved Cat-Back Exhaust - 2024-2026 Mustang Dark Horse S650 Slash Tips 21265
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CARB Compliance — California Buyers
California Prop 65 Warning
CORSA XTREME VALVED CAT-BACK — DARK HORSE
2024-2026 Mustang Dark Horse | 5.0L Coyote V8 | Slash Tips
Xtreme Valved
3.0 in. Dual
Quad 4.0 in. Slash
T-304 Stainless
CORSA DARK HORSE EXHAUST
Full sound comparison
WHAT THIS DOES
Dark Horse-specific cat-back. Xtreme Valved — the loudest system Corsa makes for the Dark Horse. 3.0-inch dual pipes, Double Helixx X-Pipe, straight-through mufflers with factory valve integration.
The Dark Horse has different exhaust routing than the GT. This system is designed for Dark Horse clearances and hangers specifically. It will not fit a standard GT.
Valves open for maximum volume. Valves closed via factory button for quiet cruising. Corsa’s No DRONE RSC technology eliminates highway resonance at cruising RPM.
WHAT IT’S MADE OF
T-304 stainless steel. Mandrel-bent 3.0 in. piping. 4.0 in. dual-wall slash tips. Made in Berea, Ohio.
MADE IN USA
NO DRONE RSC
T-304 STEEL
LIFETIME WARRANTY
OPTIONS
Select Tip Finish above.
SPECIFICATIONS
| Part Numbers | 21265 / 21265BLK |
| Sound Level | Xtreme Valved |
| System Type | Cat-Back with Active valves |
| Pipe Diameter | 3.0 in. dual |
| Tips | Quad 4.0 in. slash cut |
| Material | T-304 stainless |
| X-Pipe | Double Helixx (included) |
| Installation | Bolt-on, Dark Horse specific |
| Made In | Berea, Ohio, USA |
CONFIRMED FITMENT
- 2024-2026 Ford Mustang Dark Horse 5.0L — Dark Horse ONLY
Will NOT fit standard GT, EcoBoost, or Convertible. Dark Horse specific routing.
Backed By
CORSA LIMITED LIFETIME WARRANTY
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FREQUENTLY ASKED QUESTIONS
You'll get an instant confirmation email with your part details and invoice. We source from a network of authorized suppliers across the country, so lead times vary by brand and part type — we'll send a tracking number the moment your parts move.
Made-to-order builds — carbon fiber bodywork, fabricated systems, custom finish work — run longer than off-the-shelf items because they're built per order. You'll get progress updates throughout the build.
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