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Flowmaster 817479 American Thunder Cat-Back Exhaust System with Super 40 Mufflers

(2009-2014 Dodge Challenger; 2003-2011 Audi A4 Cabriolet)

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817479
13 reviews
Sale Price

$1,149.95

Estimated ship date Wednesday, November 25

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster American Thunder Cat-Back Exhaust System delivers aggressive sound and proven performance gains for enthusiasts seeking maximum impact. This complete bolt-on system is engineered to optimize exhaust flow while producing Flowmaster's signature deep, powerful tone.

Key Features:

  • Super 40 Series mufflers deliver aggressive exterior sound with moderate interior tone
  • Exclusive Scavenger X-pipe design maximizes exhaust scavenging for improved horsepower and torque
  • Mandrel-bent 16-gauge stainless steel tubing maintains consistent diameter for unrestricted flow
  • Dyno-tuned design ensures optimal performance across the RPM range
  • Complete hardware kit with hangers included for straightforward installation
  • Backed by Flowmaster's Lifetime Limited Warranty

This American Thunder system combines race-inspired engineering with street-friendly installation. The mandrel-bent construction eliminates restrictive crush bends found in factory exhausts, while the Scavenger X-pipe technology balances exhaust pulses between cylinder banks for maximum efficiency. Perfect for drivers who want head-turning sound with measurable performance improvements.

Products specifications

Fits

2009-2014 Dodge Challenger; 2003-2011 Audi A4 Cabriolet

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Drive

2WD

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Intercooled

No

Exhaust Tip Quantity

Sold Separately

Exhaust Tip Quantity

0

Exhaust Tip Shape

Round

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Diameter

2.50

Inlet Type

Clamp-On

Mounting Bracket Included

No

Muffler (Left) Body Width

10.00

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Quantity

1

muffler part number

852546

Muffler Quantity

2

Muffler Series

Super 40 Series

Muffler Type

Chambered

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

Aggressive

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

2

Tail Pipe Quantity

Dual

Tail Pipe Tapered Outlet

No

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Part came packaged well and arrived quickly. Exactly what I ordered showed up and installed without any issues.

Thanks for the great deal!

Very good

first time to web site. easy to order

easy

Great price

I still have to install the product on my motorcycle.

The order process was easy and the product arrived quickly.

Shipping was 5.00 on a 1.99 part but considering ebay was asking 18.00 for it I'm very happy

Fast service and shipping, Plus the lowest price for the high performance k&n air filter<br>I wanted.

very fast processing received product within a few days. fair prices. will do business with again.

I was hesitant to order from Autoplicity due to the perception that the price was too good to be real (and not some scam). However, I read a few reviews on the internet and decided to take a chance. Once I placed my order I was sent a tracking number and received my car parts within 2 weeks. I was happy that I got the parts I ordered and the price was really low. Simple and quick.

The shipping was fast, although I couldn't get it the first day because they require signature for delivery. I guess it's an added safety measure. Thank you! Will shop buy from again!

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