2015-23 Mustang Cat Back Exhaust System Installation Instructions

Follow along as we show how to install a Cat Back Exhaust on your 2015-2023 S550 Mustang from Late Model Restoration!

Viewing this install and using the information shared is subject to the terms set forth here - View the LMR Install Instructions Disclaimer.

Installing a cat-back exhaust on your 2015-23 S550 Mustang can significantly improve performance, sound, and HP/TQ gains. Even though all kits are not the same, we are here to show you the proper way to install your kit in a timely manner. For more detailed instructions regarding a specific exhaust kit, please refer to the manufactures instructions.

Tools Needed:

  • Ratchet Set
  • Floor Jack
  • Basic Tools

Removal Instructions

  1. Remove the exhaust hangers closest to the back w/ a 13mm deep socket. Then rotate the end of the hanger downwards.

  2. Mustang Cat-back Exhaust System Install

  3. Loosen (2) factory band clamps on the front factory mid-muffler.

  4. Mustang Cat-back Exhaust System Install

  5. Locate and loosen the two exhaust hangers above the muffler tips.

  6. Mustang Cat-back Exhaust System Install

  7. Repeat Step 3 to the other side.

  8. With help, carefully remove the exhaust from the car.

  9. Mustang Cat-back Exhaust System Install

  10. Once the exhaust is removed, use an exhaust hanger removal tool(purchasable at most auto stores) to remove the hangers and transfer them to the new exhaust.

  11. Mustang Cat-back Exhaust System Install

  12. Carefully remove the two exhaust clamps using a rubber mallet. Slide them onto your new exhaust pipe.

  13. Mustang Cat-back Exhaust System Install

Aftermarket Exhaust System Installation Instructions

  1. Start by installing the muffler section of the exhaust with help from a friend. Put the hanger closest to the muffler tip first, then the hanger closest to the rear end center section.

  2. Mustang Cat-back Exhaust System Install

  3. Slide the (2) included clamps on the Mid-Pipe.

  4. Mustang Cat-back Exhaust System Install

  5. At the front of the included Mid-Pipe, slide the exhaust clamp towards the factory exhaust. Snug the bolts down, but not all the way.

  6. Mustang Cat-back Exhaust System Install

  7. Firmly tighten the four bolts on the clamps.

  8. Mustang Cat-back Exhaust System Install

  9. Next, tighten down the exhaust clamps in front of the Mid-Pipe.

  10. Mustang Cat-back Exhaust System Install

  11. Have a friend apply pressure to the rear or axle back portion and tighten down the (4) hangers.

  12. Mustang Cat-back Exhaust System Install

  13. Check that you've tightened all of the clamps on your new exhaust beginning of the Mid-Pipe and moving to the Rear Mufflers. Once the position has been determined to be correct, tighten the Accuseal clamps to 32-35 ft. lbs., making sure the clamp bolts are centered between the notches in the pipe.

  14. Before starting your vehicle, make sure to check all wires, hoses, brake lines, body parts, and tires for safe clearance from the exhaust system.

  15. Start vehicle and check for any leaks. If any leaks are found, determine the cause (such as loose or incorrectly positioned clamp) and repair as necessary.

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About the Video

2015-2017 Mustang GT SVE Catback Exhaust Kit - Install & Sound Clips

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2017-07-24
Mustang SVE Catback Exhaust Kit.
Elevate the driving experience in your S550 with this SVE 2015-2017 Mustang GT catback exhaust kit! Your factory exhaust is quiet, restrictive, and leaves much to be desired. SVE's catback completely replaces your factory catback to improve sound, power, and throttle response! This kit replaces the restrictive factory resonator with a high flow H-pipe that provides a deep growl to the sound of your exhaust, as well as increased power! Stainless intermediate pipes wrap around the IRS, and connect to a set of high flow, axle back mufflers. These mufflers produce a mild hum while cruising, and a menacing rumble at wide open throttle!

SVE Quality.
SVE's industry leading quality shows in every bend, weld, and the finish of this high quality catback exhaust. Constructed using T304 stainless steel, this kit resists corrosion, oxidation, and other elements for performance that lasts. The 2.5" diameter tubing is mandrel bent for a precision fit, and smooth, uninterrupted, exhaust flow. Each high flow muffler has a dual wall, 4.5" polished tip that fills out your rear valance beautifully!

Application: 2015-2017 Mustang GT Coupe

Item # SVE-151934
How's it going everybody? Landan with Late Model Restoration. Today I'm going to be checking out SVE's cat back designed for the 2015 to 2017 Mustang GT.

This cat back exhaust kit from industry leader SVE is constructed from T304 stainless steel and mandrel bent for a precise fit. The tubing is two and half inches in diameter and will feature a high flow h-pipe which will delete that sound hogging resonator.

The mufflers are a round, race-inspired design that are very free flowing which will offer a great exhaust note from your five liter Mustang. The polished tips are whopping four and a half inches and are a dual wall design.

SVE's kit is a direct fit upgrade utilizing your factory exhaust hangers and will include four clamps for installation.

Installing this kit is very easy. Start off by supporting the car via a lift or jack stands. Loosen the two exhaust sleeves, and then remove all of the hanger hardware with a 13mm socket.

Have a friend help you remove the factory cat back from the car. Install SVE's intermediate pipes onto the h-pipe with two clamps. Loosely tighten the clamps.

Be sure and transfer the two IRS cradle hangers to the intermediate pipes and the muffler hangers need to be transferred to the new mufflers. Also make sure the exhaust sleeves are installed on the factory cat pipes.

Install the cat back into the car and loosely tighten the clamps and hangers. Slide on each muffler with the provided clamps.

Position the muffler hangers into place and retighten the hardware. Make sure the tips are straight and then retighten all hardware.

Double check everything and you’re all finished. Now, let’s check out some exhaust clips.

Overall install time here guys, bet on about two hours to get this one done. Common hand tools and a little assistant from a friend is all you should need.

To see more videos covering products from industry leader SVE, subscribe to our YouTube channel. This SVE cat back exhaust kit for the S550 GT is currently available right here at!