Exhaust
2015-2017 Roush Mustang 5.0L Exhaust Kit
Roush part # 421834
$799.99
Roush retail price · part only
Installed at our shop
est. $949.99
Part $799.99 + about 1 hr labor at $150/hr ($150.00).
Estimate only — shop supplies and sales tax not included. We confirm the final installed price for your exact vehicle before any work.
Fits: 2015–2017 Mustang
MustangInstalled at our East Bridgewater shop, or shipped anywhere in the US. Prefer to talk? 508-715-3554
- Genuine ROUSH Performance part, from an authorized Gold Dealer
- Installed by Ford specialists at our East Bridgewater shop
- Roush retail price. Installed price estimated up front, confirmed before work
Prices and availability subject to change. Prices updated October 2, 2026.
Details & specs
Product Overview: 2015-2017 Roush Mustang 5.0L V8 Exhaust Kit
Key Features:
- Compatible with 2015-2017 5.0L V8 Mustangs
- High-flow mufflers designed by Roush with a single-tip configuration
- Constructed from durable, corrosion-resistant 304 stainless steel
- Features full mandrel bends for consistent internal diameter and smooth airflow
- Includes stylish 4-inch flash-chromed dual wall exhaust tips
- Direct fit using OEM hangers and mounting points for ease of installation
- Installation requires no welding and minimal cutting
Performance Enhancements: Upgrade the performance and sound of your Mustang with the Roush Axle Back Exhaust System. Tailored specifically for 2015-2017 models, this system utilizes top-grade T-304 stainless steel for exceptional durability and resistance to corrosion. The precision mandrel bends ensure an unobstructed exhaust flow by maintaining a uniform tube diameter, minimizing backpressure for better engine efficiency.
Experience a significant enhancement in sound with the Roush high-flow mufflers. Designed to amplify the natural V8 engine note, the exhaust produces a deep, aggressive rumble at idle and a powerful roar during acceleration, encapsulating the true spirit of the Mustang.
**Check your local noise ordinances for legality.
