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Flowmaster American Thunder Catback Exhaust (99-04 Cobra)

10 Reviews
Our Price

$474.80

  • Item #18409
  • MPN# 17248

  • Market Price $527.99
  • You Save 10% ($53.19)
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Customer Photos
Features
  • Aggressive Flowmaster sound.
  • 40 Series Mufflers.
  • 3" Polished stainless steel tips.
  • Mandrel Bent Tubing.
  • Durable Aluminized Steel Construction.
  • Fits 1999-2004 SVT Cobra Mustangs.
Description
Flowmaster Sound .The Flowmaster American Thunder Catback exhaust system with its mandrel bent tubing will greatly improve your 1999 to 2004 SVT Cobra Mustangs exhaust flow for an increase in power, and their included 40 Series Mufflers will improve your exhausts sound for a deeper throatier muscle car exhaust note.

Quality Construction. Constructed from mandrel bent 2.5" 16 gauge aluminized steel tubing for it's corrosion resistant properties the Flowmaster American Thunder Catback features their 40 Series chambered mufflers with 3.0 " diameter OEM style polished stainless steel tips for great muscle car looks and sound.

Fitment. This Flowmaster American Thunder Catback exhaust system is specifically designed to fit the 1999 to 2004 SVT Cobra Mustangs with Independent Rear Suspension (IRS) for both impressive looks and sound.

Mustang Fitment: 1999 2001 2003 2004 Details

What's in the Box
Hardware included:
  • (2) Clamps
  • Installation Instructions
Installation Info
Tech Specs
Catback Exhaust Specifications
Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 3.0"
Muffler Type: Chambered Fitment: 1999-2004 SVT Cobra Mustangs
Fitment
  • Cobra - 99, 01, 03, 04

Most Helpful Reviews View All

Overall Rating 4.8/5
5/5
Flowmaster

Sounds great with O/R MAC Prochamber

Helpful (7) (0)

5/5
Flowmaster

Sounds great. Was easy to install and has great fitment.

Helpful (5) (0)

Customer Photos (3) View All

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Q & A (2 Questions, 0 Answers) Ask a Question

would this fit on my 97 svt cobra,?

John21 Year: 1997 Model: Cobra

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Good Question (0) (0)

would it fit on my 97 svt cobra?

jondre Year: 1997 Model: Cobra

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Reviews (10) Write a Review

  • 5 Stars .80 80%
  • 4 Stars .20 20%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

10 Customers Recommend this Product

Installation Time:Afternoon

  • Loudness / Volume: 4.166667 4.2/5
  • Exhaust Note: 4.833333 4.8/5
  • Fit & Finish: 5 5/5
  • Bang For Your Buck: 4.833333 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    June 20, 2010

    Flowmaster

    Sounds great with O/R MAC Prochamber

    Greg Sapp

    Helpful (7) (0)

  • 5/5 Yes, I recommend this product

    July 26, 2010

    Flowmaster

    Sounds great. Was easy to install and has great fitment.

    Darren R

    Helpful (5) (0)

  • 5/5 Yes, I recommend this product

    October 06, 2011

    Flowmaster Catback

    I've had flowmaster on 3 of my previous mustangs and just purchased another catback for my 03 Cobra. I've heard all the other competitor's catbacks and I'm still a fan of flowmaster. The sound is aggressive without being over the top. When I think of what a muscle car should sound like, flowmaster nails it.

    VGaita

    Year: 2003 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 5 Paso Robles, CA

    Helpful (1) (0)

  • 4/5 Yes, I recommend this product

    January 29, 2012

    Great Upgrade to Sound

    I have a 2003 SVT Cobra that the original owner put "glasspacks" on and the sound was annoying for me. I finally put the Magnaflow on and it sounds much healthier! The fit,price and product is always as advertised. Thanks.

    Smooth

    Year: 2003 Model: Cobra Driving Style: Show 'Stangs I have owned: 2 Tacoma,WA.

    Helpful (1) (6)

  • 5/5 Yes, I recommend this product

    May 09, 2013

    Cat-back installation (Flowmaster) on 2003 SVT Cobra

    Fortunately, I have a lift. Removal took longer than assembly! Everything was very simple and foolproof. It brought the little Cobra to life! Didn't need the stainless as car is, (and will remain) in Texas. Hats off to your team!

    BlackieTx

    Year: 2003 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 2

    Helpful (0) (0)

  • 4/5 Yes, I recommend this product

    June 16, 2012

    not to shabby for the money spent!!!

    i was gonna go with slp1's cat back then thought back to when i had flowies on my old s10 and decided to give em another shot, and glad i did!! they were pretty easy to install and took me about an hour up on jack stands. the loudness isn't as loud as i thought it would be but still sounds amazing tho. at first they were kinda quite but after a couple weeks they seemed to get louder and louder so im pretty happy with them. they got this deep rumble to em thats simply awesome, they almost dont sound like flowmasters signature sound, more like glasspacks, but i think thats because of the four cats i got. all that stuff is still stock. the shinney tips give it a good look from behind too. it took two days for me to recieve them by ups as promised. if you want a good sound, this is the way to go for sure!!!!

    mrAndybean

    Year: 1999 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 1 New Florence, PA 15944, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    February 24, 2012

    flowmaster exhaust

    these fit really well, had no problems putting them on but when i started to tighten the nuts the muffler twisted down a little so i put a small jack under the muffler so it wouldnt twist down other than that i had no problems.

    TayCobra

    Year: 1999 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 1 Yukon, OK

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    December 08, 2011

    Great product

    I've owned a few mustangs and all of them get fitted with the flowmaster catback. Exhaust note is perfect, not too loud and raspy. I've heard many other exhaust setups and in my opinion flowmaster makes the best sound, great fit, and easy to install.

    Top 1000 Contributor

    Vince

    Year: 2003 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 5+ Paso Robles, Ca.

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    June 11, 2011

    American Thunder Caback for 99-04 Cobra

    My 03 Cobra sounds like a beast. It turns head when people hear me coming or leaving. I have Pypes O/R X pipe also which makes the tone even more deeper. The fitment of the catback was nearly perfect only took a couple of hour to install in my driveway.

    Bear Miller

    Year: 2003 Model: Cobra Driving Style: Daily Driver

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    June 10, 2011

    Flowmaster Cat Back

    I have the flowmaster cat back 40 series along with the MAC off road prochamber installed on my 2001 Cobra and its great! I love the sound.. very very deep and loud if thats what you are looking for.. maybe a little difference in throttle response and horsepower but mainly great for the true cobra sound. I would suggest this for anyone with a V8 mustang.. classic product for the mustangs. Installation took me about an hour in my garage with jack stands. all bolt on great system.

    Tim Tourdo

    Year: 2001 Model: Cobra Driving Style: Daily Driver

    Helpful (0) (0)

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