Magnaflow Mustang GT Magnapack Competition Cat-Back Exhaust System (1999-2004)

3 Review(s)
$363.76 (34%)
Part Number: 263 15673
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Loud aggressive tone. Magnaflow's competition series exhaust features straight through bullet mufflers for the lightest weight and lowest flow restriction possible. Exterior sound will be loud and aggressive while the interior will have moderate sound levels.

Serious flow. With mandrel bent 2.5" stainless tube and straight through mufflers, power robbing back pressure won't be an issue with this system. 

Quality construction. Each Magnaflow kit features CNC bends and precision welds. Barbed hangers are located in place with custom jigs ensuring perfect fitment to the OE rubber mounts in the stock locations. 

Direct fit. This system bolts to the factory H-pipe and slips into the factory hangers. It includes all hardware and clamps required to install on your car with simple hand tools. Cutting off your old system with a metal cutting saw is required prior to installing this kit with basic hand tools. 

Product Benefits
  • Polished 3.5" stainless tips
  • 2.5" mandrel bent tubing
  • Aggressive muscle car sound

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: Magnaflow

Installation Information:

Level of Difficulty: Medium
Install Time: About 1 1/2 Hours
Tools Required: Basic Shop Tools

Vehicle Fitment:

Fits Model Year: 1999, 2000, 2001, 2002, 2003, 2004

Customer Reviews

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Average Customer Ratings


Top notch
Steeda has the best price out there for this catback. Upon opening the box, the initial quality of the kit is top notch. The lap welds are thick, and nothing seems frail or weak about it. The whole system is stainless so no rusting either! Install took me an hour and a half with a lift, including the time it took me to remove my old catback. Fitment took a little tweaking to get my tips to fit right, but that's expected. As far as sound, no video online can do it justice. I get way more looks and waves because of this system. It's got a deep growl, but roars when you open it up. Best money I've spent on exhaust period! Thanks to Frank at Steeda for all his help!
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from Georgia on 7/27/2015
One of the best sounding exhaust systems
Was skeptical at first but once it arrived and I put them on the mustang. I'm so glad I decided to go this route. It's one of the best sounding exhaust systems on the market. Hearing it over the computer (youtube) does this no justice. The install was just as steeda said and the instructions lay everything out clear.
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from Texas on 2/17/2013
This is one of the best sounding systems that Ive had. I owned slp lm1s and they were just loud. This has a really nice deep rich town to it and really makes it sound like a mustang should. Its made from excellent quality and had no fitment problems. I absolutely love it, and have had plenty of complements on it too.
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from Texas on 6/7/2012
There are no reviews for this product!

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