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LTH Catted X-Pipe (11-14 GT, GT500 w/ Long Tube Headers)

AmericanMuscle no longer carries the LTH Catted X-Pipe (11-14 GT, GT500 w/ Long Tube Headers). Please check out 2010-2014 Mustang X-Pipes for Long Tube Headers for an updated selection.

Features & Details

  • Improves Flow for More Power
  • Raspy Race Car Growl
  • High Flow Catalytic Converters
  • 304 Stainless Steel Construction
  • LTH Titan™ Uniform Satin Finish
  • 2.75" Diameter Mandrel-Bent Tubing
  • Modular Design
  • Intended for Off-Road, Track Use
  • Fits 2011-2014 GT and GT500 Mustangs w/ LTH Long Tube Headers
Increase Power And Performance. Add even more horsepower and torque to the rear wheels of your GT or GT500 Mustang by replacing those restrictive factory cats with a LTH Catted shorty X pipe that features high-flow catalytic converters. A LTH Catted X pipe when combined with a set of LTH Long Tube Headers will greatly improve your V8's exhaust flow increasing horsepower, torque, and overall performance.

Race Car Growl. This free flowing LTH x-pipe for the 2011-2014 Mustang's not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

Modular Design. LTH engineered their 2011-2014 Mustang exhausts using a unique "modular" design that allows you to upgrade one section of your exhaust at a time - including the headers, Mid Pipe, over axle pipes or axleback. LTH Mid-Pipes are the same length as the factory H-Pipe so they can be installed with the stock exhaust manifolds or with LTH's Long Tube Headers making them a true modular replacement.

Stainless Steel Construction. Manufactured in the USA from mandrel bent 2.75" diameter 304 stainless steel tubing for it's durability and corrosion resistance, this LTH Catted Mid-Pipe features a merged "X" crossover for superior exhaust flow and high flow catalytic converters to provide a significant horsepower increase over the restrictive stock cats.

LTH Titan™ Uniform Satin Finish. Titan™ is LTH's unique proprietary process that produces a bright uniform satin finish over the entire part to eliminate the ugly discoloration from welds, heat, and scratches that are encountered during manufacturing; making it the perfect exhaust finish for high end show cars. Not only does the process create a show quality finish, but it also strengthens the stainless steel to eliminate microscopic sharp edges created during welding that could, if not removed, become tears and cause the product to fail.

Recommended Upgrade. To realize the full power potential that this Mid-pipe has to offer, AmericanMuscle recommends a Bama custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

Application. This LTH Shorty Catted X-Pipe is specifically designed to fit the 2011-2014 GT and Shelby GT500 Mustangs with LTH Long-Tube Headers installed. Intended for off-road use.

Technical Note: This LTH product is intended for off road use, and is not legal for use in emission restrictive states.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Catted Shorty X-Pipe
  • (1) X-Pipe Leg
  • (2) 2.75" Exhaust Band Clamps
  • (2) 2.75" SEC Ball Clamps
  • LTH Installation Instructions
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Shorty "X" Type Headers Required: LTH Long Tube Headers
Piping Material: 304 Stainless Steel Piping Size: 2.75"
Catalytic Converter: Yes Fitment: 2011-2014 GT, GT500 Mustangs
Will it fit my Mustang?

    Customer Photos

      Questions & Answers (1)

      1 Top Rated Question

      Would this catted x pipe pass the Massachusetts smog test ?

      • We do not have that information on hand. It's best to ask whoever will do your inspection. If they say it will pass than buy it, if not than don't buy it.

      Helpful (0)
      Post Your Question

        Customer Reviews (2) Write a Review

        Overall Rating 4

        out of 5 stars

        Installation Time:Less than 1 Hour

        • Loudness / Volume 3.5 3.5
        • Exhaust Note 4 4
        • Fit & Finish 5 5
        • Bang For Your Buck 3 3

        • 5/5

          June 23, 2017


          Packaged well and shipped to me quick. Haven't had a chance to install but I puzzle pieced everything together and fitment is a 10-out-of10!


          Year: 2011 Submodel: GT

          Helpful (11)

        • 3/5

          Installation Time: Less than 1 Hour

          April 27, 2016

          Good for what it is

          Install was great was easy but prefer to be cat less


          Year: 2011 Submodel: GT

          Helpful (11)

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