Exhaust› Exhaust Pipes, Systems and Components
Roush
Roush 15-26 Ford Mustang 3.7L/2.3L V6/I4 Exhaust Kit w/ Round Tips
SKU: R00I 421837
Moderate — 2–4 hours
Description
Part #: 421837
ROUSH's Axle-Back Exhaust for the 2015-2023 I4 2.3L Ecoboost & V6 3.7L Mustangs is a great solution for anyone looking for a much more aggressive tone, and an overall better look!Ford's stock exhaust doesn't quite have the aggressive tone or sound Mustang owners crave; this is where ROUSH Performance comes in! ROUSH Performance has a specially engineered this exhaust that fits both the V6 3.7L and the I4 2.3L 2015-2023 Mustangs. Constructed from T-304 stainless steel, this exhaust is corrosion and stain resistant. Mandrel bends help to maintain high flow and reduce backpressure constantly throughout. This exhaust uses factory mounting points and will fit both V6 and I4 Mustangs without requiring any modification or welding. This exhaust system also greatly improves the sound and performance of your Mustang with single-tip high-flow chambered mufflers.
Shop Roush Performance 2015-2023 Mustang 3.7L V6 and 2.3L Ecoboost ROUSH Exhaust Kit - Round Tip (304SS). Dominating performance. Aggressive style. View now!
MIA's Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Roush |
| Part Number | R00I 421837 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy