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Rousch vs. Flowmaster

Mustang Exhaust Systems – Roush vs. Flowmaster

The Ford Mustang ranks as one of the best-selling and most popular American sports cars ever made. Since the mid 1960s, few cars have defined muscle car industry quite like the Mustang. While early Mustangs allowed few modifications and upgrades, later generation Mustangs – including the 6th generation models – provide plenty of opportunities to enhance stock factory components.

Rousch vs. FlowmasterPFYC, your headquarters for do-it-yourself Mustang projects, has a comprehensive assortment of your favorite Mustang parts. From exterior aftermarket accessories to under-the-hood components, you’ll find everything you need for a late generation Mustang upgrade.

Our Mustang parts experts here at PFYC receive many questions about DIY projects, and one of the most common involves exhaust components. From cat-back to axe-back systems, Mustang owners (just like you) are interested in better performance and, in many cases, better sound.

While Mustang exhaust upgrades are considered a high-priority project, there’s an argument of sorts with Mustang enthusiasts about which brand of exhaust system is better: Roush vs Flowmaster.

These two aftermarket exhaust manufacturers have long been favorites in the Mustang community, and either type would be a great fit for your Mustang. For the purposes of the current Roush vs Flowmaster Mustang exhaust argument, we’ll focus on exhaust systems for the 6th generation Mustang only.

Roush vs Flowmaster – Which One is Best for your Mustang?

With the ongoing Roush vs Flowmaster debate as heated as ever, let’s look at four different exhaust systems – two from Roush and two from Flowmaster – that any Mustang owner should consider for their next upgrade project.

  • Flowmaster American Thunder Cat-back Exhaust

Flowmaster’s American Thunder line of high-performance exhaust components has gained well-earned reviews for superior performance and sound quality, and this Mustang cat-back exhaust is no exception. Designed for 6th generation Mustangs, this exhaust uses legendary Flowmaster 60 Series muffler design for a full, optimal exhaust note. If you’re looking to add a noticeable audio kick to your exhaust sound, this is the one to own!

Flowmaster American Thunder Cat-back for 2015-2017 Mustang GT 817730

  • Roush Axle-back Exhaust – for Mustang 3.7L V6 and 2.3L EcoBoost

Specialized design, superior sound, streamlined performance – this Roush axle-back exhaust system is one of the most popular exhaust upgrades for the Mustang 3.7L V6 and 2.3L EcoBoost. This system uses top-quality T-304 stainless steel, so it’ll look good for years to come. This Roush exhaust produces optimal air flow – above and beyond the factory Mustang exhaust – and also includes a pair of exhaust tips, each featuring the Roush logo. Plus, all of your OEM installation components – hangers, clamps, etc. – can be used to install this system!

Roush Axle-back Exhaust - 2015-2017 Mustang 3.7L V6 and 2.3L EcoBoost

  • Flowmaster Outlaw Cat-back Exhaust

Recommended for any Mustang with a Coyote 5.0L DOHC V8 engine, the Flowmaster Outlaw exhaust delivers exceptional sound and upgraded performance. The Outlaw exhaust name is associated with minimal restriction, better power output and a strong racing heritage. This system boasts a bolt-on DOR (dual out rear) configuration, Scavenger X-pipe design and strong yet sleek 4095 stainless steel construction. Like every other Outlaw exhaust, this Flowmaster system is Dyno Tuned to get the most out of your Mustang!

Flowmaster Outlaw Cat-back for 2015-2017 Mustang GT 817734


  • Roush Axle-back Exhaust for GT 5.0L V8

Looking to give your Mustang exhaust a revved-up sound? Look no further than this Roush axle-back exhaust package. Say goodbye to boring stock sound with this popular Roush axle-back exhaust. But what makes this Roush Mustang exhaust truly unique is the deep, impressive exhaust tone generated an high RPMs. Made with T-304 stainless steel, this package also features full mandrel bending for easy installation, OEM-compatible integration and bold, 4-inch dual wall tips. It’s hard to find a Mustang exhaust that delivers the performance and appearance of the Roush axle-back for the 6th generation GT 5.0L V8.These are just four of the 6th generation Mustang exhaust packages available at PFYC. For a complete list of what we stock and sell, click here.

Roush Axle-back Exhaust for 2015-2017 Mustang GT 5.0L V8 421834

Roush or Flowmaster? At PFYC, You’ll Find Both – and Much More!

The “great debate” of Roush vs Flowmaster Mustang exhaust systems isn’t going to end anytime soon. In fact, because each brand continues to push the performance envelope, it’ll probably get even bigger in the upcoming years. If you’re on the fence about a Roush or Flowmaster exhaust system, that means your next exhaust upgrade will be one of the toughest decisions you’ll make with your Mustang. And everyone wants to make the right choice.

Thankfully, PFYC offers one of the largest online selections of premium aftermarket Mustang exhaust systems, including some of the best from Flowmaster and Roush. If you can’t decide between a Roush vs Flowmaster Mustang exhaust, give our exhaust experts a call today at 866-695-7392. We’ll help you make the best possible decision.

But remember, when you buy from PFYC, there are no wrong choices! Our selection offers the best value and performance you’ll find anywhere, and our customer service is second to none. Thanks for stopping by the PFYC blog!

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