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Kooks Mustang Cat-Back Exhaust (11-14 GT/Boss)

Our Price $950.95
Market Price $1,089.95  
You save $139.00 (13%)
2 points

Manufacturer  Kooks Exhaust

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  • Product Description
  • Installation Info
  • Mustang Fitment

Kook Custom Headers set the standard for the header and exhaust industry. Kooks kits come with everything needed to complete the install, even O2 extensions and high-quality Percy's gaskets. All of Kooks products are hand made in the USA using premium stainless steel.


Includes 3" mandrel bent "Over the Axle" pipes, with Kooks 3" Oval Race Mufflers and 4" Polished Tips. Made in 304 Grade Stainless Steel.


Includes Kooks 3" Oval Race Mufflers and 4" Polished Tips. Direct OEM Replacement. Made in 304 Grade Stainless Steel.

Product Benefits

  • Aggressive sound
  • Great fitment and everything included for the install
  • Made from high-quality stainless steel in the USA
Time to Install
About 1 1/2 Hours
Level of Difficulty
Tech Recommended
Tools Needed
Basic Tools
Model Year(s)
2014 2013 2012 2011

GT Boss

Manual Automatic

Product Reviews

After an extensive research period, I decided on this cat-back system. Let me just say that now after enjoying the sound of this system for about 2 weeks, I see why Steeda is offering this set-up to its customers. Excellent sound, fit, and finish!

I took my time and decided on this cat-back system... Whoa! It is beyond a reasonable doubt that I made the right choice! Excellent sound, fit, and finish.