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Kooks GREEN Catted H-Pipe (11-14 GT500 w/ Long Tube Headers)

Item 390853
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Market Price $1,377.99 You Save 12% ($158.60)
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$1,219.39 (each)

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      Product Information

      Features, Description, Q&A, Specs & Installation


      • 3" Durable Stainless Steel Construction
      • Kooks High-Flow GREEN Cats
      • Connects to 2-3/4" Factory Exhaust
      • Performance, Deep Tone and EPA Certified
      • Works on Applications up to 800 horsepower
      • Withstands Temperatures up to 1500 Degrees
      • Fits 2011-2014 GT500 Mustangs w/ Kooks Long Tube Headers


      Improved Sound and Performance. Your 2011-2014 Ford Mustang GT500 is your prize procession that already sounds awesome, but your Stang will really turn heads more and perform even better if you upgrade the exhaust system with a Kooks GREEN Catted H-Pipe. The 49 state EPA certified GREEN catalytic converters don't rob horsepower and the H-pipe enhances the performance and the tone of the exhaust system.

      Durable, Long Lasting Construction. This Catted H-Pipe will withstand up to 800 horsepower and temperatures of up to 1500 degrees. The Kooks GREEN Catted H-Pipe is constructed using durable grade 304 stainless steel to last for years to come.

      Easy, Bolt-On Installation. The Kooks GREEN Catted H-Pipe is a bolt-on application that does not require welding, cutting or drilling. The cats bolt-up to the 3" Kooks Long Tube Headers and the H-pipe clamps to the existing 2-3/4" OEM exhaust system. All of the required mounting hardware is provided.

      Application. This Kooks GREEN Catted H-Pipe is designed to fit all 2011-2014 Ford Mustang GT500's equipped with 3" Kooks Long Tube Headers.

      Fitment: 2011 2012 2013 2014 Details

      Kooks 11423600

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Catalytic Converters
      • (1) Stainless Steel H-Pipe
      • (2) Exhaust Clamps

      Tech Specs

      Mid Pipe Specifications
      Style Mid Pipe: Shorty H-PipeType Headers Required:Kooks Long Tube
      Piping Material:Stainless SteelPiping Size:3" to 2.75"
      Catalytic Converter:YesFitment:2011-2014 GT500

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Would these fit 2011 though 2014 GT?

      • This specific Kooks GREEN Catted H-Pipe is only intended for use of a 11-14 Mustang GT500 equipped with long tube headers. Unfortunately this would not be a direct fit for a GT Mustang.

      Helpful (0)

      Since these are 49 state EPA certified "green" cats, does that mean if I match them up with a set of Kooks long tube headers, I would have a street legal setup? And the bigger question, would my car still be able to pass DEQ?

      • This catted mid pipe with a set of Kooks long tubes would be street legal because there are catalytic converters installed.

      Helpful (0)
      Post Your Question

      Will It Fit My Mustang

      • GT500 - 11, 12, 13, 14

      Requires Long Tube Headers