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Kooks GREEN Catted H-Pipe - 3 in. to 2.75 in. (11-14 GT w/ Long Tube Headers)

Market Price $1,226.51 You Save 10% ($122.65)
Our Price

$1,103.86 (each)

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  • Item 390851
  • MPN# 11413600

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Features & Details

  • 3" Durable Stainless Steel Construction
  • High-Flow Performance GREEN Cats
  • Connects to the 5.0 Coyote 2-3/4" OEM Exhaust
  • Performance, Deep Tone and EPA Compliant
  • Works on Applications up to 800 horsepower
  • Withstands Temperatures up to 1500 Degrees
  • Fits 2011-2014 GT Mustangs w/ Kooks Long Tube Headers
Improved Sound and Performance. Your 2011-2014 Ford Mustang GT was one of the best sounding vehicles that ever rolled off the showroom floor, but it can sound and perform even better if it's equipped with headers and a Kooks GREEN Catted H-Pipe. The Kooks GREEN Catted H-Pipe and headers are an excellent option for a Mustang GT that's a daily driver, but heads to the track or drag strip on the weekends. The 49 state EPA certified GREEN catalytic converters deliver ultra high performance and the H-pipe enhances the power and the tone of the exhaust system.

Durable, Long Lasting Construction. The Kooks GREEN Catted H-Pipe is constructed utilizing durable aircraft grade 304 stainless steel. This catted H-pipe will handle up to 800 horsepower and temperatures of up to 1500 degrees.

Easy, Bolt-On Installation. The Kooks GREEN Catted H-Pipe is application specific and bolts up to the existing 2-3/4" OEM exhaust system. The cats bolt-up to the required 3” Kooks Long Tube Headers and the H-Pipe is secured with the exhaust clamps that are provided. No welding, cutting or drilling is required.

Application. This Kooks GREEN Catted H-Pipe is designed to fit all 2011-2014 Ford Mustang GT's with a 5.0-liter Coyote engine equipped with 3” Kooks Long Tube Headers.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Catalytic Converters
  • (1) Stainless Steel H-Pipe
  • (2) Exhaust Clamps
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Shorty H-Pipe Type Headers Required: Kooks Long Tube
Piping Material: 304 Stainless Steel Piping Size: 3" to 2.75"
Catalytic Converter: Yes Fitment: 2011-2014 GT
Will it fit my Mustang?
  • GT - 11, 12, 13, 14

Requires Kooks Long Tube Headers

Customer Photos

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2 Questions / 2 Answers

Ask a Question

Will this fit with the kooks 1 3/4 in long tube headers MPN# 11412200? The description on the page for the headers states they only fit with the x pipe.


  • The Kooks GREEN Catted H-Pipe - 3 in. to 2.75 in. should work with any of the Kooks 3" long tube headers. The headers you listed have a 3" collector, so they should work with this H-pipe.


Helpful (1)

Are they California carb compliant??


  • This H-pipe would not be CARB compliant no.


Helpful (0)

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