Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998

Flowmaster: 17215
MSRP: $669.35
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Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998
Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998 Play Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998 Video 1

Product Description

Flowmaster 2-1/2" American Thunder Cat-Back Exhaust Kit for all 1998 GT and Cobra Mustangs.

The Flowmaster American Thunder Exhaust System is constructed out of 16 Gauge Aluminized Steel. The 2-1/2” Exhaust Pipes are mandrel bent for better exhaust flow. Flowmaster installs a pair of Super 44 Muffler on this American Thunder Exhaust System. The Super 44 Muffler will provide a moderate exhaust note with that classic muscle car sound.

When you install this American Thunder Cat-Back Exhaust System you will experience improved acceleration, power and fuel mileage. Flowmaster uses aluminized steel exhaust pipes, this features great corrosion-resistant qualities. The 2-1/2” mandrel bent pipes run from the catalytic convertor all the way back to the rear bumper. At the rear bumper two 2-1/2” Stainless Steel tips protrude past the rear bumper.

Kit Includes:
- Pair of Flowmaster Super-44 Series 2-Chamber Mufflers
- Pair of Aluminized Steel Tailpipes
- Pair of 2-1/2" Stainless Steel Tips

- 16 Gauge Pipe
- Mandrel Bent Pipes
- Moderate Exhaust Sound
-Included Mounting Hardware
- Aluminized Steel Construction
- Stainless Steel Tips

Flowmaster is a manufacturer of just about any part you need for your Mustang's exhaust, from full exhaust systems and exhaust kits, to mufflers and accessories. Flowmaster is widely known for their distinctive 'Flowmaster sound,' which is available in mild, moderate and aggressive tones, so you know you can find the perfect muffler or exhaust system for your Mustang.

Purchase a new Flowmaster 2-1/2" American Thunder Cat-Back Exhaust Kit for your 1998 GT or Cobra Mustang from CJ Pony Parts today!

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Mustang Applications

This product will fit the following Ford Mustang years:

Product Reviews

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Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998 is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from nice sound got this a few months ago fitting was fairly easy ,the hard bit was cutting off the old pipe. get the car up as high as you can on jack stands. overall nice sound and a bit more power
Date published: 2015-03-01
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Product Questions

With this exhaust, what other part is needed for my 98 V6? I'm wanting to put on a true dual exhaust. Thank you.

Asked by: italian stang
This kit won't fit a V6. It's for GTs only. This is more the kit you'd want: http://www.cjponyparts.com/flowmaster-cat-back-system-v-6-w-2-5-ss-tips-1998-1998/p/CBFF9/
Answered by: CJ Pony Parts
Date published: 2015-01-19
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Product Video

Flowmaster Cat-Back Exhaust Kit American Thunder 2-1/2” GT/Cobra 1998 Video Transcript
By Bill Tumas: Bill: We have a special guest in our studio today. Alex, the regional sales manager from Flowmaster, is here to tell us about the company. Alex thanks for coming.

Alex: Thank you for having me Bill. How are you doing today?

Bill: I'm doing good. We all know the two chamber Flowmaster. If you had a Fox Body back in the day you had some Flowmasters on it. But what else can you tell us about your company?

Alex: Well, Flowmaster is an aftermarket performance exhaust manufacturer, Bill, that started off on the racetracks. Ray Flugger, the founder of the company, designed mufflers for racers that were being hammered for excessive noise limits. Flowmaster presents that opportunity where you're able to reduce those dB levels without having to hurt or kill performance. Flowmaster is also one of the most significant speed parts of all time where we are actually an innovative product different from the standard that's out there.

Bill: The two chamber Flowmaster that was the original product he was selling out of a suitcase.

Alex: The 40 Series, except with some slight modifications on the case itself. Back then it was a square case and now it's more of a round oval.

Bill: The other mufflers you have here, what can you tell me about them?

Alex: Here we have a 50 Series Delta Flow to the far right, which is a three chamber design, a little more subdued, a little mellower for those that are looking for less interior resonance. In the middle here we've got a Super 40, which is a two chamber design, a little thicker, a little wider, which is set up to handle higher output applications. To the far left we've got a Super 44, which is the latest and greatest two chamber design that Flowmaster has released in recent years.

Bill: Is that still based off of the original design?

Alex: That is correct.

Bill: I know Flowmaster has a lot of kits available for the 2005 and newer Mustangs. What can you tell me about these two kits you brought with you today?

Alex: Well, Bill here we've got a Force II exhaust system from Flowmaster. It's a direct bolt on axle back 409 stainless steel with a limited lifetime warranty, fully constructed here in the U.S. It's got the rolled edge stainless steel tip with the nice four inch diameter. All of the hardware, everything you need, is included within the kit so you don't have to buy any additional accessories.

This would probably take you an hour and a half to install out of your own garage on a weekend. Very subdued, very mellow kind of tone, something designed for someone who's looking for more of a performance aspect with a little bit of rumble, nothing too wild, nothing too crazy.

Over here on the right we've got the Outlaw System. The Outlaw is very noticeable, very aggressive. It's the 'hear me from a mile away' type of sound, something I would only recommend to those who are fully aware of what they're getting. It utilizes an Outlaw race muffler, basically a muffler that was designed for race applications that are required to run mufflers without a specific dB limit. Again, I only recommend it to those that are looking for the aggressive tone from Flowmaster. It is fully built out of stainless steel, lifetime warranty as well.

Bill: The Outlaw is available for '05 and up for both the 5.0 liter and the 4.6 liter cars?

Alex: That is correct.

Bill: We know Flowmaster that has systems that fit all year Mustangs, but I heard you guys are getting in other parts of the exhaust as well?

Alex: That's right, Bill. We actually just released a full line of stainless steel headers, ceramic coated, very high end piece. They look great. It'll compliment the rest of your exhaust components. We also just released a full line of catalytic converters, both 49 state and carb certified.

Bill: If you're looking for that classic Flowmaster sound, it doesn't matter what year your car is, Flowmaster has a system that will fit your Mustang.