1999-04 Mustang Magnaflow Catback Exhaust System w/o IRS 4.6 2v/4v by Magnaflow

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  • Magnaflow Mustang Cat Back Exhaust System w/o IRS (99-04) 4.6 2v/4v 15671
Magnaflow Mustang Cat Back Exhaust System w/o IRS (99-04) 4.6 2v/4v 15671

Update the sound of your New Edge with this 1999-2004 Mustang Magnaflow Catback!

Item #MPE-15671
MPN# 15671

Everyday Low Price: $618.88

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
  • 2.5" Tubing
  • 3.5" Tips

What's in the Box

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

Made in the USA

Product Description

Aggressive Exhaust Tone
Get your 1999-2004 Mustang GT, Bullitt or Mach1 sounding, performing, and looking better with this Magnaflow catback exhaust kit. This kit not only gives your New Edge an aggressive new exhaust tone, it improves exhaust flow for increased power and performance. This system delivers a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. These kits are dyno proven for maximum performance.

High Quality Construction
This catback exhaust kit is made from mandrel bent stainless steel to give you maximum performance. Magnaflow exhaust systems also feature stainless welds and clamps. Backed by a Lifetime Warranty.

Fits 1999-2004 Mustang GT, Bullitt, & Mach 1.

Magnaflow Exhaust Warranty - Click Here

See what our customers have to say about this product!
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Product Reviews (4)

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4 of 4 REVIEWS
4 of 4 REVIEWS

5 Stars   Fits great, lasts, sounds perfect.
By on 5/29/2016
I first had the SLP 1 catback, and it was terrible. Way to loud and sucked ass. Was cool for 2 days then I was over it. Then I had Mac Produmps and those were awesome. Sounded great, made power, etc... But after 6 years it was time for new catback. I got these and I must say its perfect. You get a nice noise at idle, at crusing speeds you can talk to your friends and or be on the phone and people can hear you. At Wide open throttle they get loud and sound great. Its the best mix of being able to hear the car, talk inside or listen to music, and then noise at WOT. If you actually drive your car a lot. These are perfect.

Yes, I would recommend this item to a friend!

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5 Stars   great fit
By on 6/12/2014
Great sound I would recommend to anyone not over the top, nice deep tone

Yes, I would recommend this item to a friend!

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5 Stars   very high quality
By on 2/29/2016
excellent packaging, very high quality material and welding. Took me 4 hours to install-I'm methodical and fairly slow so you could prob do it faster. Car is 03 GT convertible. Sound is mellow but then picks up when I step on the gas. There's a prominent drone at 2K RPM inside, the drone is gone with the top down. I've only had it a week so I'll need more time to see if I can deal with the drone. So far, it seems fairly loud with the top up-possibly louder inside than outside. I'll let it settle in for a while. Compared to stock-it's nice to actually hear the car now!

Yes, I would recommend this item to a friend!

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5 Stars   Great product. Excellent support!!!
By on 4/22/2015
I received my order very fast. I was able to use a discount from Facebook. I had a problem with the product upon receipt of delivery. The problem was solved from the excellent support and service.

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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