Home Roush 422091 Y-Pipe (Mustang EcoBoost 15-21)

Roush 422091 Y-Pipe (Mustang EcoBoost 15-21)

NOW $964.15
Or 4 interest-free payments of $241.03
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Roush 422091 - 2015-2019 Ford Mustang EcoBoost 2.3L Y-Pipe ROUSH 2015-2023 Mustang 2.3L EcoBoost Y-Pipe Quick to install, our stainless steel Y-Pipe for the 15-23 I4 EcoBoost Mustang is an affordable way to get that deep, aggressive, race-inspired tone.

Ships free. ROUSH Performance's Resonator Delete Y-Pipe is a quick and affordable way to eliminate your factory resonator to get deep, aggressive and race-inspired sound. Our Y-Pipe increases flow through your 2015-2023 Mustang I4 exhaust system for maximum horsepower and torque.

The 2.5-inch Y-Pipe assembly is made from high-grade mandrel-bent 304 stainless steel to ensure maximum flow with less back pressure and long-lasting durability. The system is designed and engineered using OEM vehicle CAD data to ensure perfect fit.

ROUSH Performance recommends checking your local noise ordinance levels prior to purchase. Pair with our axle back kits to take your Mustang to the next level!2015-2023 Mustang 3.7L ROUSH V6 and 2.3L Ecoboost Exhaust Kit (#421837) Install Time : 1 hour Product Category Type : Mufflers & Pipes

Shipping Information

Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.


The Kren Bits journey:

  • Order received — Day 0
  • With fulfilment — Day 1–2
  • Heading to courier — Day 2–4
  • Shipped — Day 3–7
  • Almost there — Day 5–10
  • Delivered — Day 5–14

Where your part ships from:

Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.


We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.


For more details, visit our Track Your Order page.

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