Exhaust
2015-2026 Roush Mustang 2.3L EcoBoost Y-Pipe
Roush part # 422091
$239.99
Roush retail price · part only
Installed at our shop
est. $464.99
Part $239.99 + about 1.5 hrs labor at $150/hr ($225.00).
Estimate only — shop supplies and sales tax not included. We confirm the final installed price for your exact vehicle before any work.
Fits: 2015–2026 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 highlights for the 2015-2026* Roush Mustang 2.3L EcoBoost Y-Pipe:
- Reduces back pressure and improves the flow of your Mustang's exhaust system for maximum horsepower, torque, and overall performance
- Pipes are made with high-quality 304 stainless steel for durability and corrosion resistance
- Eliminates the factory resonator to give your vehicle a racecar-like growl and more aggressive sound
- Y-pipe is mandrel bent to ensure consistent flow
- Approximate 12-pound weight reduction from stock muffler assembly
- Fits all 2015-2025 2.3L I4 EcoBoost Mustang (both fastbacks and convertibles)
- Installation is quick and simple
- Includes all necessary hardware
- *NOTE: Only fits 2025 EcoBoost w/ active exhaust & resonator (must visually inspect, no clear distinction on window sticker if resonator is present from factory)
Roush Performance's Resonator Delete Y-Pipe offers a convenient and cost-effective solution to eliminate your factory resonator, resulting in a deep, aggressive, and race-inspired exhaust note. This Y-Pipe is designed to enhance the flow in your 2015-2026 Mustang I4 exhaust system, delivering maximum horsepower and torque.
Crafted from high-quality mandrel-bent 304 stainless steel, the 2.25-inch Y-Pipe assembly ensures optimal flow, reduced back pressure, and exceptional durability. The system's design and engineering are based on OEM vehicle CAD data, guaranteeing a precise fit.
**Before purchasing, please consider your local noise regulations, as Roush Performance recommends compliance.
Pair this Y-Pipe with our axle back kits to elevate your Mustang's performance:
