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Flowmaster 817750 - American Thunder Cat Back Exhaust System

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$840.95

$935.00

You save: $94.05 (10%) off MSRP

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This part fits

  1. 2018 Ford Mustang EcoBoost 2.3L L4 cid:140 cc:2300
  2. 2018 Ford Mustang EcoBoost Premium 2.3L L4 cid:140 cc:2300
  3. 2016 Ford Mustang EcoBoost 2.3L L4 cid:140 cc:2300
  4. 2016 Ford Mustang EcoBoost Premium 2.3L L4 cid:140 cc:2300
  5. 2015 Ford Mustang EcoBoost 2.3L L4 cid:140 cc:2300
  6. 2015 Ford Mustang EcoBoost Premium 2.3L L4 cid:140 cc:2300
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About this product

Part #: 817750

Flowmaster's American Thunder Cat-back exhaust system for the 2015-2018 Ford Mustang is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system for the 2.3L EcoBoost engine features 2.50in mandrel bent tubing that splits into dual 2.25in pipes for maximum performance and then runs into Outlaw Series mufflers. The system is finished off with dual 4.00in stainless steel tips that exit within the rear bumper valence. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Note: This system fits hardtops and convertibles.

More Details

Catalytic Converter IncludedNo
ColorBlack
Exhaust TypeDual
Exit PositionDual Rear
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter3.000 in.
MaterialStainless Steel
Mount TypeFlanged
Muffler Part NumberKit Only
Muffler SeriesOutlaw
Muffler TypeWelded Baffle
Outlet Diameter3.000 in.
Outlet Outside Diameter2.250 in.
ShapeOval
Single or DualDual
Sound LevelModerate/Aggressive
System TypeCat Back
Tail Pipe Diameter2.250 in.
Tail Pipe Diameter3.000 in.
Tip CutAngle
Tip Diameter4.000 in.
Tip FinishPolished
Tip MaterialStainless Steel
Tip Quantity2
Tip ShapeRound
Tip TypeDouble Wall
TitleFlowmaster 817750 Cat-back System - 409S- DOR - American Thunder Kit - Mod/Agg Sound
Tubing Diameter3.000 in.
Tubing MaterialStainless Steel
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?
I like the sound of Flowmaster and I like the new exhaust look
Is this your first time buying from this brand? Did you consider other brands?
no all of my other Mustangs had Flowmasters installled
View on Seth'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?
Sound of the system, quality of the flowmaster product and their name speaks for itself.
Is this your first time buying from this brand? Did you consider other brands?
No I have used flowmater before on other rides.
Was it easy to install? Any installation tips that will help others?
Relatively easy to install with the proper tool.
Once you've had a chance to use the product, did it meet your expectations?
Good purchase, very pleased
Any additional comments?
Has a bit of a drone but easy to drown out with the stereo.
View on James'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?
I love the way they sound and i hope the power is there i have had them for so long maybe one day ill get new stuff
Is this your first time buying from this brand? Did you consider other brands?
nope they were a find in a srap yard
Was it easy to install? Any installation tips that will help others?
nope
Once you've had a chance to use the product, did it meet your expectations?
yup
Any additional comments?
nope
View on Joseph'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?
Wanted a great sound from the mild 355 motor and were affordable for the custom exhaust I built.
Is this your first time buying from this brand? Did you consider other brands?
yes
View on Alex'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?
was already on car but is alright for what it is
Is this your first time buying from this brand? Did you consider other brands?
no
Was it easy to install? Any installation tips that will help others?
Was welded on when got just take exhaust to shops they can weld better than you.
Once you've had a chance to use the product, did it meet your expectations?
Its fine but I wish it was a bit louder
Any additional comments?
buy corsa
View on Chance'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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