This Axle-Back Exhaust System enhances the 2011-2014 Ford Mustang GT 5.0L with an aggressive, race-inspired tone and bold, blacked-out appearance. Tuned specifically for the Coyote V8, the straight-through muffler design increases flow and amplifies exhaust character while minimizing in-cabin drone. Premium 304 stainless steel construction ensures long-term durability, and the dual 4 in. black-coated tips deliver a stealthy, modern look. The axle-back design installs easily with a bolt-on process and retains all factory emissions components.

Roush Performance 421127-BLK Axle-Back Exhaust System Features:

• Straight-through muffler design delivers deep, aggressive exhaust tone
• Constructed from mandrel-bent 304 stainless steel for corrosion resistance
• Dual 4 in. black-coated tips with etched logo detailing
• Retains factory catalytic converters and resonators
• Amplifies V8 sound without excessive cabin drone
• Bolt-on installation with no cutting or welding required

Roush Performance 421127-BLK Axle-Back Exhaust System Notes:

• Designed for Mustang GT 5.0L models only
• Reuses factory mounting locations for proper fitment

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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