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Flowmaster 817750 - American Thunder Cat Back Exhaust System

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$993.95

$1,105.00

You save: $111.05 (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?
Sound
View on Chad's build
Michael Curbelo

290

Michael Curbelo
1988 Ford Mustang
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?
The way it sounds on the car and the reviews that it got is what sold me on buying it
Is this your first time buying from this brand? Did you consider other brands?
I’ve had this brand before but of different mufflers and I was considering getting SLP loudmouth bullet style mufflers
Was it easy to install? Any installation tips that will help others?
Was easy to install everything bolted right up
Once you've had a chance to use the product, did it meet your expectations?
It exceeded my expectations
View on Michael's build
Michael Caffrey

217

Michael Caffrey
2000 Chevrolet S-10
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?
It was recommended by the installer
Is this your first time buying from this brand? Did you consider other brands?
Yes
View on Michael'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?
LIKE: Aggressive sound, Black muffler, qp Cold starts, Chrome tips DISLIKE: Not much to dislike LABOR: Did it myself INSTALLATION: Step by step instructions, NOTE: make sure you measure and mark before you cut off old exhaust, Took around 3 to 5 hours (took my time) PERFORMANCE: Deep aggressive sound, allows more air to flow. RECOMMEND: I would RECOMMEND for those who are comfortable cutting exhaust, but professional installation also encouraged if you arent up for the challenge.
View on Robert'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?
Its Flow master, so of course it sounds good and it doesn't have packing to wear out.
View on Cameron'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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