Product Reviews for 2005-10 Mustang GT/GT500 Roush Extreme Exhaust 421915
Completely redesigned for maximum performance, the Roush Extreme
Exhaust 421915 gives your 2005-2010 GT (4.6L V8)/2007-2010 GT500 (5.4L
V8) a more aggressive growl.The Extreme exhaust uses 409 aluminized
stainless steel for its durability and corrosion resistance. Fully
mandrel bent pipes extend from the axle to 4 inch chrome dual wall tips
with minimal flow restriction. The previous Extreme exhausts versions
mufflers have been replaced with straight-through high-flow resonators.
The straight through design is less restrictive and gives this exhaust
a tough, guttural sound unique to ROUSH exhausts that lets people know
you are driving something special. The Dual wall tips are the same
design found on ROUSH 2015 Mustang exhausts, use 304 stainless steel
construction and feature a special chrome flashing process that reduces
cracking and heat discoloration.
kit uses all stock mounting points and comes with hangars pre-welded.
Absolutely no cutting or custom fabrication is required for a perfect
fit. All ROUSH exhausts use CAD data from the original manufacturer in
the design process. This ensures perfect, OEM quality fitment and