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Magnaflow Street Series Cat-Back Exhaust (11-12 GT/Boss/GT500)

Original price was: $987.99.Current price is: $888.11.


Magnaflow Street Series Cat-Back Performance 3″ Dual Exhaust for 2011-2012 Mustang GT, 2012 Boss 302, and 2011-2012 GT500.



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About the Magnaflow Street Series Cat-Back

Made in the USA from 409 stainless steel, Magnaflow’s Street Series performance exhaust is designed to provide your 2011-2012 Mustang GT, 2012 Boss 302, or 2011-2012 Shelby GT500 a smooth deep tone you’ll love while also delivering an increase in horsepower and torque.


Magnaflow’s Street Series cat-back features their straight-through flow design to maximize horsepower and torque while maintaining exhaust efficiency. The system is designed to balance both interior and exterior noise levels and is tested against SAE J1169, the measurement of light vehicle exhaust sound level under stationary conditions.

The Street Series is constructed of 3″ mandrel bent tubing and features two polished 4″ stainless steel tips to give your Mustang the perfect look from behind. This quality construction and design is further backed up with Magnaflow’s Lifetime Construction Warranty.

This system is a direct bolt-on to your Mustang’s factory mid-pipe and will require no modification to mount up.


The Street Series Cat-Back features a Stainless Steel construction with two 4″ dia. polished Stainless steel tips.

Will it Fit?

This system is designed to fit all 2011-2012 Mustang GT, 2012 Boss 302, and 2011-2012 Shelby GT500.


  • Mandrel bent 3″ stainless steel tubing
  • Deep muscle car sound
  • 5in x 8 in x 14 in Muffler size
  • 4″ Polished Tip Diameter

What’s in the Box?

(2) Muffler assemblies (Driver and Passenger)

(2) Inlet Pipes (Driver and Passenger)

(2) 3″ Band Clamps


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