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Exhaust Systems

Make it sound like it should.

The S197 platform sounds good stock. But with the right exhaust, it sounds legendary. We've ranked the best options by sound quality, build quality, and actual performance gains.

4 curated picks
Loudest Option
$699

Borla ATAK Axle-Back

Borla

The loudest axle-back you can bolt on. Pure American V8 thunder with zero drone at highway speeds. T-304 stainless, lifetime warranty.

Fitment 2005-2009 GT, 2010-2014 GT
Expected Gains +5-8 hp at the wheels
Install Difficulty ★★☆☆☆ Easy
Best Value
$449

Pypes Violator Cat-Back

Pypes

Best bang-for-buck cat-back on the market. Aggressive tone that doesn't break the bank. 409 stainless with mandrel bends.

Fitment 2005-2010 GT
Expected Gains +8-12 hp with tune
Install Difficulty ★★☆☆☆ Easy
Most Power
$1,599

Kooks 1-7/8" Long Tube Headers

Kooks

The gold standard for S197 headers. Hand-welded 304 stainless, merge collectors, and the best power gains you'll get from a bolt-on. Requires a tune.

Fitment 2005-2010 GT (3V)
Expected Gains +25-40 hp with tune
Install Difficulty ★★★★★ Hard
Editor's Pick
$549

Roush Axle-Back

Roush

Deep, refined V8 growl designed by Roush engineers. OEM fitment quality with 30 minutes install. Perfect if you want loud without obnoxious.

Fitment 2011-2014 GT, 2011-2014 V6
Expected Gains +3-5 hp
Install Difficulty ★☆☆☆☆ Very Easy

Other Categories

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Cold Air Intakes
Suspension & Handling
Power & Tuning
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Wheels & Brakes

Mason&Son Performance is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. All prices are approximate and subject to change. Always verify fitment for your specific year and model before purchasing.

Free: The S197 Mod Priority List — 5 mods in order