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How To Install Pypes X-Pipe on your 2011-2014 GT Mustang

Installation Time

2 hours

American Muscle
Shop Parts in this Guide

Pypes Performance Exhaust

2705 Clemens Road Suite B103 Hatfield, PA 19440

800-421-3890 (voice) 267-638-3507 (fax)

409 Stainless Steel
2011-14 Ford Mustang X-pipe

Thanks again for purchasing your new 409 stainless steel Pypes Performance Exhaust 2011-13 Mustang 5.0 X-pipe. Please be sure to confirm all the components in the kit were received in your shipment before beginning installation. These kits will include your new x-pipe with 02 bungs and installation hardware. If you find any component missing, please contact our office at 800-421-3890 for replacement. Installation of this kit will require a few simple hand tools, a cutting device and penetrating oil. For a quicker and tighter installation, air tools are recommended.

Technical assistance is available both online at: or 800-421-3890

This kit is designed to convert your factory H-pipe into an X-pipe without voiding the manufacturers warranty.


This X-pipe is designed to replace your factory catted H-pipe and requires the use of an aftermarket tuning devise of your choice. Intended for off road use only!

1. Begin by securely raising your car with jack stand or a lift so that you can work safely under the car.

2. Now you can unbolt the factory band clamps located at the factory midpipes. Once undone you will be able to drop out the midpipes out of the way. Next loose the two factory band clamps and remove the H-pipe from the car. Note you will need to reuse all the factory clamps.

3. In order to reuse the bell shaped clamps attached the H-pipe you will need to cut the tabs that hold them to the H.

4. You can now install your new x-pipe. Slide the Bell shaped clamp on the X-pipe and then mate the X-pipe to the factory cat pipes and loosely tighten the bell clamps. Install the butt clamps at the midpipes. You can now tighten all the clamps.

5. Test drive the car for several miles and inspect for leaks or loose connections. A black residue around a connection indicates an exhaust leak.

6. After around 50 miles of driving, re-inspect for leaks and loose connections.

Now it’s time to fire up that Mustang and enjoy your new Pypes Performance Exhaust.

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