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Roush Mustang GT/GT500 Extreme Axle-Back Exhaust Kit (2005-2010)

$6.00 (1%)
Roush 421915 Mustang GT/GT500 Extreme Axle-Back Exhaust lets your S197 roar to life when you start it. The ferocious sound under acceleration is an attention getter and is sure to make you grin ear to ear.

Part Number: 531 421915
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The Roush Extreme Axle-Back Exhaust Kit is for the Mustang owner that wants a vicious and rowdy sound. If you don't mind the attention and some cabin noise, this axle-back is the best way to get a racecar sound from your S197. 

Resonator design. This exhaust kit falls between a muffler delete and a high-flow muffler. The bullet-style resonators do not restrict the volume or exhaust flow but help to tune the sound and eliminate unwanted frequencies. This helps reduce the cabin noise that is introduced when increasing the volume of the exhaust. With the stock exhaust manifold, catalytic converters, and other piping, the interior noise with this axle-back is manageable. 

Ferocious sound. You can expect to be one of the loudest Mustangs around with this system. Roush doesn't hold your Mustang back with this kit. The mandrel bend 2.5" diameter pipe lets your 4.6L or 5.4L V8 sing. 

Features & Benefits: 
  • Loud volume
  • Aggressive tone
  • 2.5" diameter T409 piping
  • 4" dual-wall T304 stainless steel tips
  • Mounts in OE points
  • No cutting or welding
  • 3-year Roush limited warranty
  • Can be used with factory valance
  • Resonated to eliminate harsh frequencies 

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features

Manufacturer: Roush

Installation Information:
Level of Difficulty: Easy
Install Time: About 1 Hour
Tools Required: Ratchet, ratchet extensions, metric socket set, spray lubricant

Vehicle Fitment:
Fits Trim Levels: GT, GT500
Fits Model Years: 2005, 2006, 2007, 2008, 2009, 2010
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