cat-back

Flowmaster 817587 - American Thunder Cat Back Exhaust System

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$859.73

Discontinued

This product has been discontinued by the manufacturer.

SELECT YOUR VEHICLE

This part fits

  1. 2014 Ford Mustang GT 5.0L V8 cid:302 cc:4951
  2. 2013 Ford Mustang GT 5.0L V8 cid:302 cc:4951
Authorized Dealer

About this product

Part #: 817587

For the serious enthusiast who is looking for all the performance benefits of a complete Cat-back dual exhaust system, this is it. As an American Thunder system, it delivers an aggressive exterior sound level and a moderate interior tone that is suited to the enthusiast who wants to be heard. With maximum performance and easy fit in mind, the system is mandrel bent and includes specially engineered mufflers featuring Delta Flow technology. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for a simple installation. Note: does not fit GT500.

More Details

2WD/4WD2WD
Automotive Item GradeHigh Performance Part
Bullet Point #1Mandrel bent 16 gauge stainless steel tubing
Bullet Point #2Aggressive Sound Exterior Exhaust Tone
Bullet Point #3Header-back System
Bullet Point #4Flowmaster quality
Exhaust SeriesAmerican Thunder
Exhaust TypeSingle
Exit PositionDual Rear Exit
Exit StyleStraight
Heat ShieldNo
Heat Shield AttachedNo
Inlet Diameter3
Inlet Diameter (in)3
Inlet Inside Diameter (in.)3
MaterialStainless Steel
Muffler Count2
Muffler Part NumberKit Only
Muffler Quantity2
Muffler Series60 Series
Outlet Diameter3.0 in.
Outlet Diameter (in)3
Outlet Outside Diameter (in.)3
Single DualDual
Single or DualDual
Sound LevelAggressive Sound
System TypeCat Back
System TypeCat-back System
Tip Diameter (in)4
Tip Diameter (in.)4
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Deep quality sound.
Is this your first time buying from this brand? Did you consider other brands?
No. And yes I considered a few different brands.
Was it easy to install? Any installation tips that will help others?
Yes.
Once you've had a chance to use the product, did it meet your expectations?
A little on the quiet sid but good sound
View on Josh's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
owned flowmaster products before, always happy
Is this your first time buying from this brand? Did you consider other brands?
nope
Was it easy to install? Any installation tips that will help others?
cost about $80 to install at my local Meineke
View on John's build
Eduardo Ambriz

164

Eduardo Ambriz
2014 Ford Fiesta
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I chose it because it was a good value in terms of sound for the money. It was also plug and play whereas other systems required a fair bit of modification on my part and I didn't want to deal with that.
Is this your first time buying from this brand? Did you consider other brands?
This is my first time buying from them and I had considered Borla, but went with fFowmaster because of its value.
Was it easy to install? Any installation tips that will help others?
I installed it myself and it wasn't all that easy. The nut is just supposed to be removed from the bolt and the new exhaust should be bolted right back on. The thing is that my bolt was stripped and it was pressed in from the factory so it had to get pushed back out and replaced with a new bolt and nut. Other than that it was plug and play.
Once you've had a chance to use the product, did it meet your expectations?
It is definitely a good value as it gives a deeper tone while making it a bit louder, but not loud enough that it gets annoying. It also doesn't drone too bad when just driving around town.
View on Eduardo's build
Brian Pawlowski

207

Brian Pawlowski
2016 Ford F-150
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Sounds good, good sound for price.I have friends who have flow master.
Is this your first time buying from this brand? Did you consider other brands?
First time for flow master. Was looking at Borla but the price tag was just too much. Borla is more expensive because they use 304 stainless steel where flow master used 409 which is a less durable version of stainless steel, and has been known to rust out.
Was it easy to install? Any installation tips that will help others?
Need a lift or need to cut exhaust out if on ground. Lay out parts first and have clamps ready. Overall wasn't bad at all.
Once you've had a chance to use the product, did it meet your expectations?
Yes! It is loud and sounds good. Time will tell about the rust issues.
View on Brian's build
Kaelen Lillard

132

Kaelen Lillard
1994 Lexus LS 400
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I wanted the car to have a rumble but not too loud.
Is this your first time buying from this brand? Did you consider other brands?
Yes, I did consider Magnaflow.
View on Kaelen's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

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