Powered by Mustang Enthusiasts - Call Now (866) 507-3786

2015-17 Mustang Roush Axle Back Exhaust GT by Roush

Details   |  Videos   |  Reviews

Details   |   Videos   |   Reviews
2015-17 Mustang Roush Axle Back Exhaust GT
2015-17 Mustang Roush Axle Back Exhaust GT
2015-17 Mustang Roush Axle Back Exhaust GT
2015-17 Mustang Roush Axle Back Exhaust GT

Increase performance & sound in your 2015-2017 Mustang GT with this Roush Axle Back exhaust kit!

Item #RSH-421834
MPN# 421834

Everyday Low Price: $802.99

Low Stock Only 2 available. Ships today!
This item is not eligible for discounts or coupon codes.
 This item is returnable. Details

Free Shipping over $99

 Add to Cart

Due to Hurricane Ian, shipments to certain areas in Florida and South Carolina may experience delays or suspended service. FedEx Service Disruptions

Made in the USA


  • Aggressive Sound
  • Increased Performance
  • Made In USA


  • 304 Stainless Steel Construction
  • 4" Tips
  • Mandrel Bent Tubing
  • Roush Quality

 What's in the Box

  • (1) LH Muffler Assembly
  • (1) RH Muffler Assembly
  • (2) Exhaust Tips
  • (4) Exhaust Clamps
  • Installation Instructions

Roush Rumble
Give your 2015-2017 Mustang GT the wild howl of American V8 muscle that it deserves. This innovative new exhaust system from Roush features a hollow muffler chamber, as opposed to conventional fiberglass-packing. The result is a unique and less inhibited sound, increased air flow, and increased longevity (there is no fiberglass that will break-down with time). Another great feature of this 2015-2017 Mustang Roush exhaust system is the lack of the in-cockpit boom normally found with performance exhaust systems at cruising speeds.

Top Notch Quality
Not only does this exhaust sound good, it looks good as well. The round tips are made from high-quality 304 stainless steel and are finished with a chrome flashing process. Conventional chrome plating uses layers of bonded chemicals to achieve its shiny appearance, which are susceptible to cracking and flaking especially when exposed to high temperatures (like exhaust). However, the chrome flashing used in this system is bonded micro-porously to the metal surface, and is as a result impervious to cracking from localized damage. This method of chroming is also resistant to heat color change.

-Fits 2015-2017 Mustang GT

ROUSH® Limited Warranty - Click Here

  • Ford Mustang - 2015, 2016, 2017
  • Sub Models: GT

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

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.

Look for Similar Items by Category

2015-2022 Mustang Parts » 2015-2022 Mustang Exhaust » 2015-2022 Mustang Axle Back Exhaust
Mustang & Lightning Tech, Articles, How To Videos » 15-21 Mustang Tech, Articles, How To Videos » 15-21 Mustang Guides » 2015-20 Mustang GT Performance Parts Guide
2015-2022 Mustang Roush Parts

Products by Vehicle

Add to Cart