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axle-back

Flowmaster - American Thunder Axle Back Exhaust System (817749)

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$621.95

$691.95

You save: $70.00 (10%) off MSRP

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Check to see if this fits your vehicle

This part fits

  1. 2017 Ford Mustang GT 5.0L V8 cid:302 cc:4951
  2. 2017 Ford Mustang GT Premium 5.0L V8 cid:302 cc:4951
  3. 2016 Ford Mustang GT 5.0L V8 cid:302 cc:4951
  4. 2016 Ford Mustang GT Premium 5.0L V8 cid:302 cc:4951 Convertible
  5. 2016 Ford Mustang GT Premium 5.0L V8 cid:302 cc:4951 Coupe
  6. 2015 Ford Mustang GT 5.0L V8 cid:302 cc:4951
  7. 2015 Ford Mustang GT 50 Years Limited Edition 5.0L V8 cid:302 cc:4951
  8. 2015 Ford Mustang GT Premium 5.0L V8 cid:302 cc:4951 Convertible
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About this product

Part #: 817749

Flowmaster's American Thunder Axle-back exhaust system for the 2015-2017 Ford Mustang GT is perfect for the person looking for an aggressive sound level both inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) emissions-legal system for cars with the 5.0L engine features a pair of Super 44 Series mufflers and dual mandrel bent 3.00in tailpipes for maximum performance. The system is built out of 409S stainless steel and utilizes 4.00in stainless steel tips. 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 Diameter2.500 in.
Inlet Inside Diameter3.000 in.
MaterialStainless Steel
Mount TypeFlanged
Muffler Count2
Muffler Part NumberKit Only
Muffler SeriesSuper 44
Muffler TypeWelded Baffle
Outlet Diameter3.000 in.
Outlet Outside Diameter3.000 in.
ShapeOval
Single or DualDual
Sound LevelModerate/Aggressive
Tip CutAngle
Tip Diameter4.000 in.
Tip FinishPolished
Tip LogoEmbossed
Tip MaterialStainless Steel
Tip Quantity2
Tip ShapeRound
Tip TypeDouble Wall
TitleFlowmaster 817749 Axle-back System - 409S - Dual Rear Exit - American Thunder - Mod/Agg Sound
Tubing Diameter3.000 in.
Tubing MaterialStainless Steel
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

TOP RATED Flowmaster Exhaust

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.

Benefits of adding this mod

An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.

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we ship worldwide!

Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

+ FREE GROUND SHIPPING ON U.S. ORDERS OVER $99
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Have a question? Ask an Expert!

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- but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

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Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

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Matt Farah

Smoking Tire / The Drive

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Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

James M.

Ford Focus ST

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Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

Wallace R

Chevrolet Silverado 1500