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Roush Part # RSH421837-BLK

Roush - 2015-2026 Roush Mustang V6 & Ecoboost Black-Tip Axle-Back Exhaust - 421837-BLK

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Canadian since 2005 Questions? Email sales@raptorracing.com

Sharper Sound. Stealth Look. Proven Roush Performance.

Awaken your 2015–2026 Mustang V6 or EcoBoost with the Roush Performance Black-Tip Axle-Back Exhaust System — a bold upgrade that delivers aggressive tone, enhanced flow, and motorsport-inspired styling. Whether you're driving a 3.7L V6 or 2.3L EcoBoost, this system amplifies your Mustang’s performance character with a rich, throaty sound and head-turning rear-end presence.

Key Features:

  • Fits 2015–2026 Mustang V6 and 2015–2025 Mustang EcoBoost Fastback models

  • Dual 4" black exhaust tips with laser-etched Roush Performance logos for a sleek, aggressive finish

  • Straight-through muffler design for a deeper, more powerful exhaust note

  • Mandrel-bent 304 stainless steel for durability and optimized exhaust flow

  • Axle-back design — retains factory catalytic converters and emissions components

  • Bolt-on installation — no cutting or welding required

Sound That Matches Your Drive.

Designed with performance in mind, the Roush Performance Axle-Back Exhaust gives your V6 or EcoBoost Mustang a more aggressive exhaust tone that enhances your driving experience without unwanted drone. The straight-through mufflers and smooth mandrel bends provide improved flow and a sporty, race-ready growl — all while maintaining comfort inside the cabin.

Style That Sets You Apart.

With dual 4-inch black tips and precision-crafted components, this system doesn’t just sound the part — it looks it. The stealthy finish and bold Roush Performance branding give your rear fascia a clean, performance-focused appearance that stands out from stock.

Built with Purpose. Backed by Performance.

Like every Roush Performance product, this axle-back system is engineered with the same attention to detail, durability, and precision that defines our performance heritage. It’s built to perform — and built to last.


Upgrade your Mustang V6 or EcoBoost with the Roush Performance Black-Tip Axle-Back Exhaust — the perfect combination of sound, style, and street-ready performance.

Shop now and unleash the tone your Mustang was meant to have.

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.

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