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2018-20 Mustang Roush Axle Back Exhaust Kit GT by Roush

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  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L
  • 422097 2018 ROUSH Mustang 5.0L

Add a race inspired exhaust tone to your 2018-2020 Mustang 5.0 with this Roush axle back exhaust kit!

Item #RSH-422097
MPN# 422097

Everyday Low Price: $749.99

Low Stock Only 3 available

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  • Menacing Sound
  • Reduces Back Pressure
  • Made In The USA
  • Increased Performance


  • 3.5" Chrome Quad Tips
  • T-304 Stainless Steel
  • 3" Mandrel Bent Tubing
  • Dual High Flow Mufflers

What's in the Box

  • (2) Mufflers LH, RH
  • (2) Exhaust Tips LH, RH
  • (2) Muffler To Mid Pipe Clamps
  • (2) Muffler to Tip Clamps

Roush Brand Image

Product Description

Roush Axle Back Exhaust Kit
Upgrade your 2018-2020 Mustang 5.0 exhaust system with a Roush axle back exhaust kit! This exhaust kit gives you a race-inspired sound that brings out your 5.0 engine's true sound! Roush's axle back kit features top of the line dual high flow mufflers that opens up your exhaust system and doesn't reroute gasses that cause backpressure. This gives you a raspy loud sound, unlike a restrictive factory muffler. Add a Roush axle back exhaust kit to your Mustang to improve the power and sound of your Coyote engine!

Roush Quality
Roush's axle back kit is designed and tested to give your S550 5.0 the best sound and performance possible. Featuring 3" mandrel-bent pipes, this helps reduce backpressure and the disruption of airflow by using tubing that is smooth and doesn't neck down. This kit uses T-304 stainless steel pipes with 3.5" stainless steel quad polished tips that fight corrosion and rust to give you long-lasting performance!

  • Fits 2015-2017 Mustang with these Roush Rear Valence Kits: RSH-421894 & RSH-421919
  • Fits 2018-2020 Mustang 5.0 without Active Exhaust

    ROUSH® Limited Warranty - Click Here

  • California Residents:
    WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

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    Vehicle Applications

    Ford Mustang - 2018 (18) - 2019 (19) - 2020 (20)

    About This Brand

    Roush - The Art of Performance Engineering
    ROUSH Performance is the first specialty-vehicle company to combine race-proven technologies with advanced automotive engineering. The result, a unique mix of street car and race car...Is a ROUSH car. Or more specifically, a ROUSH Mustang or F-150 pickup with styling, performance, and handling characteristics derived from the racetrack and modified for street legal usage. The vehicles and components produced by ROUSH Performance are imprinted with Jack Roush's vision, passion for performance, and commitment to excellence. He personally approves the design, engineering, fit, finish and overall performance of each package, ensuring that his personal standards are met prior to production and product release. Many of these products are designed by the same engineering group that has helped Roush Racing become the winningest Ford racing team in history.

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