This Black-Tip Axle-Back Exhaust System upgrades the 2011-2014 Ford Mustang V6 with an aggressive performance tone and sleek exterior styling. Tuned specifically for the 3.7L V6 engine, the straight-through muffler design delivers deeper sound and increased flow while avoiding excessive in-cabin drone. Mandrel-bent 409 stainless steel tubing ensures durability and corrosion resistance, and the dual 4 in. black-coated tips provide a bold, race-inspired look. The bolt-on configuration retains factory emissions components and installs without cutting or welding.

Roush Performance 421145-BLK Axle-Back Exhaust System Features:

• Straight-through muffler design enhances tone and flow
• Mandrel-bent 409 stainless steel tubing for strength and corrosion resistance
• Dual 4 in. black-finished exhaust tips with logo detailing
• Axle-back design retains factory catalytic converters
• Aggressive, deeper exhaust note without unwanted drone
• Easy bolt-on installation with no cutting or welding required

Roush Performance 421145-BLK Axle-Back Exhaust System Notes:

• Designed exclusively for Mustang V6 3.7L applications
• Reuses factory mounting points 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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