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Stainless Works Off-Road H-Pipe (11-14 GT500)

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  • Item #525563
  • MPN #525563
  • Market Price $469.99
  • You Save 11% ($50.00)
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Product Videos
  • Improves exhaust flow for more power
  • Classic muscle car rumble
  • Standard length "H" design
  • T304 Stainless steel construction
  • Intended for off-road, track use only
  • Fits 2011-2014 Shelby GT500 Mustangs
Improves Exhaust Flow. Increase the power at the rear wheels of your Shelby GT500 by eliminating those power robbing catalytic converters with a Stainless Works Off-road H-pipe. This Stainless Works H-pipe will greatly improve your Shelby's exhaust flow over the restrictive stock factory mid-pipe to significantly increase your Pony's horsepower, torque and overall performance.

Muscle Car Rumble. This free flowing Stainless Works mid-Pipe for the 2011-2014 Supercharged GT500 not only increases power, but it also adds a deep muscle car rumble to the sound of your exhaust with its classic "H" crossover pipe design.

Superior Construction. Manufactured from T304 stainless steel tubing for strength and durability, Stainless Works mid pipes are mandrel-bent for superior airflow - so there are no kinks to rob you of power.

Application. This standard length Stainless Works Off-Road H-pipe is designed to fit the 2011-2014 Shelby GT500 Mustangs with either the stock factory exhaust manifolds or aftermarket shorty style headers installed.

Technical Notes. This Stainless Works product is not legal for use in California or other states adopting California pollution controlled emission standards; intended for off road use only.

Mustang Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Off-Road H-Pipe
Installation Info

Installation Time: (approx) 2 Hours

Difficulty Level:Mechanical expertise or professional installation required.

Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Standard length "H" Type Headers Required: Shorty or Stock Manifolds
Piping Material: T304 Stainless Steel Piping Size: -"
Catalytic Converter: "No" - For off-road use only Fitment: 2011-2014 Shelby GT500
  • GT500 - 11, 12, 13, 14


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1 Customer Recommends this Product

Installation Time:Afternoon

  • Loudness / Volume: 4 4/5
  • Exhaust Note: 3 3/5
  • Fit & Finish: 2 2/5
  • Bang For Your Buck: 3 3/5
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  • 3/5


    August 22, 2014

    Overall I'm happy with the exhaust it is more raspy at high rpm than I would had liked. I put this on and kept the original axel backs and original headers. I did this because I didn't want a drone on the hwy and it's there but it's perfect. You can have a conversation in the car with out a problem. Installers beware there are two extra O2 sensor holes that the car does not have sensors for. You need to buy bolts to plug them up with I was upset because I had already taken my OE pipe out when I realized and had no other car to go get them with. Stainless works should provide the plugs or at least put a big orange paper in the box notifying you that you need to get additional parts before installing. Also this mid pipe makes your tail pipes stick out about a half inch past the bumper. It doesn't look bad it actually gives it an aggressive look but just FYI.


    Year: 2014 Model: GT500 Driving Style: Daily Driver 'Stangs I have owned: 1 Pompano Beach, FL, USA

    Helpful (0) (1)

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