Wheelwell members take 5% off: FAST19 at checkout.

Flowmaster - American Thunder Cat Back Exhaust System (817778)

Exhaust System Kit



You save: $231.28 (23%) off MSRP


In Stock - Ships within 24 hours
Select your vehicle to confirm fitment:

This part fits

  1. 2017 Dodge Charger R/T 5.7L V8 cid:345
Authorized Dealer
Not for sale or street use in California.

About this product

Part #: 817778

Flowmaster's American Thunder(R) Cat-back exhaust system for the 2017 Dodge Charger R/T with the 5.7L Hemi engine is perfect for the person looking for an aggressive exterior sound level with all of the performance benefits that you would expect from Flowmaster. This bolt-on 409S stainless steel system features a dual 3.00 inch mandrel-bent Scavenger Series X-Pipe for maximum performance and a pair of specially designed Super 40 Series mufflers with 3.50 inch internals for maximum power and exterior sound quality, but with a moderate but pleasant interior tone at cruising speeds. Other features include dual 3.00 inch mandrel-bent tailpipes which are designed to re-use the factory exhaust valves and exit in the factory exhaust tips located in the rear valance. The tailpipes are a two piece design and have no resonators. This system includes all necessary parts, hardware and instructions for an easy installation. Proud to Say Made in the USA.

More Details

Bullet Point #1Specially Designed Large Muffler Internals for Powerful Deep Sound
Bullet Point #2Designed to Re-use the Factory Exhaust Valves
Bullet Point #3Scavenger X-Pipe Cross-over Pipe
Bullet Point #4Stainless Steel Construction
Catalytic Converter IncludedNo
Exhaust SeriesAmerican Thunder
Exhaust TypeCat-Back
Exit PositionDOR
Heat ShieldNo
Heat Shield AttachedNo
Inlet Inside Diameter (in.)3
Mount TypeUses Factory Hangers
Muffler Body Length (in)13.5
Muffler Body Length (in.)13.500
Muffler Body Material409S Stainless Steel
Muffler Body ShapeOval
Muffler InletOffset
Muffler Inlet Diameter (in)3
Muffler Inlet Diameter (in.)3.000
Muffler OutletCentered
Muffler Part NumberKit Only
Muffler SeriesSuper 40 Series
Muffler ShapeOval
Muffler TypeReflection
Single DualDual
Single or DualDual
System TypeCat-back
Tubing Diameter3.00 in.
Tubing Diameter (in)3
Tubing Material409S Stainless Steel
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

Allen Griesemer


Allen Griesemer
2005 Audi S4
What made you choose this particular product?
View on Allen's build
Austin Wartko


Austin Wartko
1999 BMW 3 Series
What made you choose this particular product?
View on Austin's build
Matthew Marchant


Matthew Marchant
2007 GMC Sierra 1500
What made you choose this particular product?
price 0.00 got it while i was working for a quick lube guy brought it in and wanted the stock system
View on Matthew's build
What made you choose this particular product?
It was already installed on the car when I purchased it.
View on Eric's build
Was it easy to install? Any installation tips that will help others?
Easy to install with the right tools
View on Al's build
WARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

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.


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.

+ always free shipping in the U.S.
Have a question? Ask an Expert!

Finding the best parts can be tricky

- 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).

chat-iconLive Chat
Ask our expert tuners anything!
call_iconCall Us
1 (800) 959-4304

Wheelwell wants to be the new online hub for car parts and accessories.

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.

Matt Farah

Smoking Tire / The Drive

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

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

Wallace R

Chevrolet Silverado 1500