1999-04 Mustang Magnaflow IRS Catback Exhaust System Stainless Steel Cobra by Magnaflow

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Magnaflow Mustang IRS Catback Exhaust System Stainless Steel (99-04) Cobra 15644

Increase power and sound in your 1999-2004 Mustang Cobra with this Magnaflow stainless steel catback exhaust system!

Item #MPE-15644
MPN# 15644

Everyday Low Price: $617.26

Out of Stock 

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  • Dyno Tested And Proven To Make Power
  • Great Sound
  • Performance Gains In Horsepower And Torque
  • Has A Smooth Deep Tone


  • Lifetime Warranty,
  • Easy To Install
  • Mandrel-Bent
  • All Welded
  • Built To Last

What's in the Box

  • (2) Socket Style Flanges
  • (2) Stainless Flow Tube
  • (2) polished Stainless Mufflers
  • (2) Stainless Exhaust Tube
  • (2) Stainless Tips
  • (6) Exhaust Clamps
  • (2) Hangers For Exhaust Tip
  • (2) Exhaust Tip Set Screw
  • (1) Allen Wrench
  • Install Instructions

Made in the USA

Product Description

Magnaflow Exhaust systems for 1999-04 Mustang Cobras are the most popular exhaust systems on the market today. Magnaflow designs and builds each system to fit and sound perfectly for your vehicle, whether it be a LX, GT or Cobra. Magnaflow Catback exhaust systems are all built with high grade stainless steel components and feature stainless welds and clamps. Backed by a Lifetime Warranty.

4.6L V-8, Supercharged, Cobra W/IRS,
Dual Exhaust, 2.5" Tubing,
Rear Exit, 3.5" Tips

All Stainless Steel, Mandrel-Bent, Catback Exhaust System With Polished Stainless Steel Tips.

Magnaflow Exhaust Warranty - Click Here

Customer Photos (1)

Product Reviews (3)

out of 5 stars
4 stars
3 reviews
5 stars    1
4 stars    1
3 stars    1
2 stars    0
1 star    0

2 of 3 REVIEWS
2 of 3 REVIEWS

3 Stars   Tool Marks...yuck
By on 1/25/2016
The exhaust fit well on my IRS equiped fox. It should also be noted that I have it mated to the SVE X-Pipe and BBK shorties. This set up is quiet at idle but loud when you want it to be-so perfect. My concerns come in the form of price/quality. It's almost offensive that I paid 600+ dollars for an exhaust riddled with tool marks. Look, I understand it's part of the process, and that's fine, but the price needs to reflect the quality. i suppose the only thing that atones is the fact that it's stainless. with that being said, I spent the entire weekend sanding and polishing. Never again, Magnaflow...never again. The attached photo is after HOURS of work.

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4 Stars   IRS swap
By on 6/15/2016
I am a little bias, I originally had the magnapack exhaust on my gt. However I did a cobra IRS swap needed new exhaust a loved the old one. The new magnaflow exhaust with the traditional oval mufflers is a little bit quieter but no highway drone like the magnapacks. The installation was simple and lined up very well with the openings. Only complaint is the tip hangers were not bent enough to fit on the brackets and ended up reusing my old ones.
Magnaflow loved it so much I bought it again.

Yes, I would recommend this item to a friend!

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5 Stars   Great sound and fit!
By on 8/1/2017
Image uploaded by Timothy W. I love the sound of this Cat back with my Magnaflow catted X-pipe. Not overly loud, but such nice sound! Takes a little more time to install as the pipes are not pre-welded to the mufflers.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

About This Brand

Magnaflow - Power and Sound
A well known name and leader in the industry, Magnaflow has set the standard for aftermarket Mustang exhaust components. Utilizing products made in the USA, Magnaflow uses the latest technology to fabricate high quality cat back and axle back exhaust systems. Each exhaust kit is dyno tested and flow bench tested to provide the best sound and most power to get your Mustang performing at its best.

On May 18, 2000, MagnaFlow Performance Exhaust was awarded the ISO-9001 certificate. ISO-9001 is an international quality standard created by the International Organization for Standardization to define quality management and manufacturing systems. It has 20 specific design, material, and process requirements that help MagnaFlow/Car Sound ensure customer satisfaction with our products and services on Mustangs and Lightnings. ISO-9001 certified companies are re-audited every six months to ensure that quality standards are maintained.

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