Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Sound

Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Flowmaster® - Slash Cut Tip

Flowmaster® 817477 - American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit

Name: Flowmaster® 817477 - American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit
Brand: Flowmaster
SKU: mpn854022
Price: 949.95 USD
Availability: InStock
Rating: 4.6 (66 reviews)

66 reviews|Item # mpn854022

Vehicle Specific

Notes:

The system comes with 50 Series HD muffler
Remember to check your local or state laws regarding vehicle noise restrictions and Emission Standards

Authorized Dealer

$949.95

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Vehicle Fitment

Dodge

Ram

Specifications

Exhaust System Type	Cat-Back
Exhaust Tubing Material	Stainless Steel
Exit Location	Split Rear
Main Tubing Diameter	3"
Exhaust System Sound	Aggressive / Loud
Muffler Inlet Diameter	3"
Muffler Outlet Diameter	2.5"
Muffler Series	50 Series HD
Muffler Quantity	1
Tip Quantity	2
Tip Outlet Diameter	4"
Hardware Included	Hangers, Mounting Hardware
Catalytic Converter(s) Included	No
Exhaust Type	Single in/Dual out
Exit Location	Split rear
Hardware Included	Yes
Intermediate Pipe Diameter (in.)	3.00 in.
Muffler Configuration	Single inlet/Dual outlet
Muffler Finish	Black
Muffler Included	Yes
Muffler Material	409 stainless steel
Muffler Quantity	One
Muffler Style	Chambered
Quantity	Sold as a kit.
Remanufactured	No
System Finish	Aluminized
System Material	409 stainless steel
System Style	Cat-back
Tailpipe Diameter (in.)	2.50 in.
Tip Color	Polished
Tip Cut	Slant
Tip Edge Style	Half-rolled edge
Tip Included	Yes
Tip Material	304 stainless steel
Tip Outlet Size (in.)	4.00
Tip Quantity	1
Tip Shape	Round
Additional Info	Dyno tuned for maximum performance

Includes

(1) 3" clamp (Part Number MC300BS)
(1) 3/8" Lock washer
(1) 3/8" Nut
(1) 3/8"x 4" Bolt
(1) Adapter pipe (Part Number TB230S)
(1) Clamp Hanger (Part Number 393HA)
(1) Frame Hanger (Part Number 226HA)
(1) Left Front Tailpipe (Part Number 16380S)
(1) Left Rear Tailpipe (Part Number 16398S)
(1) Muffler (Part Number 8530552-Z)
(1) Parts kit (Part Number PK530)
(1) Right Tailpipe (Part Number 16399S)
(1) Rubber hanger (Part Number HA168)
(1) Square spacer (Part Number HA226)
(2) 3/8" Flat washers
(2) 7/16" Hanger Keepers
(2) Rear Exit Pipe (R/L) 16397 S
(2) Side Exit Pipe (R/L) (Part Number 16317S)
(2) Stainless Tip (Part Number ST396)
(5) 2 ½" clamp (Part Number MC250BS)

Features

High Quality Performance Sound
Increases Torque and Power
Mandrel Bent 16 Gauge Tubing
Includes Hangers and Hardware for Easy Installation
Every System Tuned on Dynamometer

Product Details

American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit (817477) by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive / Loud. American Thunder exhaust system is perfect for the person looking for a moderately aggressive sound level outside of the car, while maintaining a mild sound level inside, with all of the performance benefits that you would expect from Flowmaster. American Thunder gives you the classic sound of a Flowmaster chambered exhaust, which is the classic sound of classic American big performance engines. This is a system that gives the most sedate vehicle a performance rumble.

Installation

Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Installation Instructions

American Thunder gives you exactly the sound that is promised by the name of the series. The exhaust sound of the American Thunder system has become a symbol of American power that is recognized all over the world. American Thunder is the most popular of the Flowmaster exhaust systems, enhancing power, torque, throttle response and mileage for automobile enthusiasts all over the world.

All Flowmaster exhaust systems give the same improvement of performance. All Flowmaster exhaust systems produce a beautiful deep performance tone. Choosing between the five different exhaust systems is not a technical decision – it is all up to your personal taste. It’s A Sound Decision™. The racing origin is evident in every Flowmaster exhaust system. All the five series of systems are tuned for maximum performance. They differ in technology and tuning, and thus in tone and character, giving you a performance engine sound to your personal liking.

Flowmaster exhaust systems employ two unique technologies, the patented Delta Flow and the Laminar Flow. They give different characters of sound and can be tuned to achieve the desired exhaust note. Flowmaster Exhaust System Technology is so versatile and gives such a high degree of control that it is used both by racers, who want maximum power, and by the U.S. Air Force in Stealth applications, where maximum silence and minimum heat emissions are prime considerations.

Be it for a domestic or import truck, SUV, off-road warrior, daily driver, muscle car, euro-spec cruiser or sport compact vehicle, Flowmaster technicians personally hand select the right muffler, tubing size, resonator, and tip to make the process easy for you. Best of all, Flowmaster stainless steel exhaust systems are covered by a Limited Lifetime Warranty; ensuring that your exhaust will last as long as you own your vehicle. If you choose aluminized steel products, Flowmaster backs them up with a 3-year warranty.

Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Installation Instructions Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System Dyno Chart Flowmaster® - Exhaust Types Flowmaster® - Guide Flowmaster® - Types of Mufflers Flowmaster® - Exhaust Systems Comparison Flowmaster® - Warranty Flowmaster® - Catalogs Made In USA Flowmaster Authorized Dealer Video FAQ About us

Brand:

Flowmaster

Part Number:

817477

UPC:

700042023660

Warranty

Lifetime Limited Warranty applies to Flowmaster stainless steel mufflers, stainless steel exhaust systems, stainless steel pipes, air intake kits and oiled type filters (except cleaning kits) and other stainless steel exhaust accessories (except exhaust tips).

Three (3) Year Limited Warranty applies to Flowmaster aluminized steel mufflers, aluminized steel exhaust systems, aluminized steel pipes, exhaust tips and other non-race exhaust accessories.

Two (2) Year Limited Warranty applies to Delta Force Dry air intake filter elements.

One (1) Year Limited Warranty applies to Elite Series exhaust headers and electronic components such as Delta Boost modules. Flowmaster, Inc. (“Flowmaster”) extends the following limited warranty to the original purchaser of its mufflers, exhaust systems, pipes, exhaust tips, headers and other non-race accessories (hereafter “products”), excluding catalytic converters sold under the Flowmaster® brand.

This catalytic converter is warranted to be free from defects in materials and workmanship subject to the exclusion and conditions set forth below and subject to the durational limits in this paragraph.

EPA Catalytic Converter Warranty: The stainless steel body and the nipples alone are warranted for 5 years or 50,000 miles, whichever comes first. At the conclusion of the 5 year/50,000 mile or 25,000 mile period, whichever is applicable, all liability under this limited warranty shall terminate.

CARB Catalytic Converter Warranty: This catalytic converter has been designed and manufactured and is warranted to meet California Air Resources Board emission requirements for 50,000 miles. The stainless steel body and the nipples alone are warranted for 5 years or 50,000 miles, whichever comes first. At the conclusion of the 5 year/50,000 miles on stainless steel body and nipples or 50,000 miles on catalyst substrate, whichever is applicable, all liability under this limited warranty shall terminate.

Flowmaster warrants the products mentioned above against defects in materials and workmanship for the period set forth below, when they are owned by the original purchaser and remain installed on the vehicle on which they were originally installed. This warranty is void if the product was not installed properly on the vehicle, was installed on a vehicle for which it was not designed, or was removed from the vehicle on which it was originally installed and reinstalled on another vehicle. This warranty shall not apply to normal wear, cosmetic issues such as coatings and material discoloration, any product that was installed on a racing vehicle, installed improperly or contrary to Flowmaster instructions, altered, misused, repaired, damaged from an accident, collision, undercarriage road impact or debris, or willful or negligent act.

The warranty set forth herein for Flowmaster® stainless steel mufflers, stainless steel exhaust systems, stainless steel pipes and other stainless steel exhaust accessories (except exhaust tips) extends for a period of the life of the original vehicle the product was installed on. The warranty set forth herein for Flowmaster aluminized steel mufflers, aluminized steel exhaust systems, aluminized steel pipes, all exhaust tips and non-race exhaust accessories and commercial applications of aluminized steel products or stainless steel products extends for a period of three (3) years from the date of original purchase and the original vehicle it was installed on. The warranty set forth herein for Flowmaster exhaust headers extends for a period of one (1) year from the date of original purchase and the original vehicle it was installed on. Header warranty does not cover damages caused by exhaust insulating wrap, and is void if the product was installed on a new or rebuilt engine during the initial break-in period.

Flowmaster’s liability is expressly limited to the replacement of the product or refund of the purchase price as described herein. In no event shall Flowmaster be liable for any direct, indirect, special, incidental or consequential losses and/or damages, including but not limited to interruption of business or loss of business or loss of profit or damage to related components resulting from the use of or inability to use the product, or any breach of warranty or any defect in the product, even if Flowmaster shall have been advised of the possibility of such potential losses or damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights. You may also have other rights which may vary from state to state.

The warranties set forth herein are exclusive and unless otherwise required by applicable law no other warranties are made by Flowmaster® or are authorized to be made with respect to the product.

Reviews

(66)

Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.

1-10 of 66 Reviews

Sort by

4 of 5

Solid

Solid buy. Very easy to install if you’re looking for louder but not ridiculously loud this is it.

Flowmaster® 817477 - American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit

Posted by Isaac (Rocky Ford, CO) / March 02, 20192013 Ram 1500

5 of 5

Love It!

Easy to install and sounds awesome. Highly recommend this exhaust kit.

Posted by Alexander (Tucson, AZ) / May 20, 20132013 Dodge Ram

5 of 5

Flowmaster's American Thunder

The Flowmaster exhaust sounds great on my truck, it gives the aggressive sound, and it was very easy to install too. It took me about 1hr to complete it. My 2012 Dodge Ram Rt sounds great, with it I get more mpg.

Posted by Rachid (Port Royal, SC) / March 02, 20132013 Dodge Ram

5 of 5

Excellent Experience

Product was received in a timely manner and was exactly as advertised. Installation was even easier than stock, as the left side tail pipe is designed in 2 pieces as opposed to the 1 piece factory pipe. This made it simple to install over and around the axle and spare tire. I did this installation on my garage floor without the use of a hoist and had it completed in about an hour.

Posted by Steve (Yarker, ON) / December 01, 20122011 Dodge Ram

5 of 5

Ram Kit

Very easy to install, only took 30 min. Look great. Perfect fit and quality. Not that aggressive sounding but good for cat-back system.

Posted by John (Dryden, ON) / August 17, 20132013 Dodge Ram

5 of 5

Exhaust Line

Complete exhaust line goes perfectly on my Chevrolet pick-up Very good quality

Flowmaster® - American Thunder™ Cat-Back Exhaust System with Split Rear/Side Exit

Posted by Bertrand (St Pierre Brouck) / February 28, 20231993 Chevy CK Pickup

5 of 5

Great Value

This went on a 2020 Ram 1500 Bighorn. The instructions were easy to read, and the installation was a breeze. Quality of parts is top notch, and fitment was right in the money. I’m impressed with how well this resonator delete kit woke up my Ram truck. Great sound inside and outside the cabin at low speeds, and it settles down nicely at highway speeds.

Flowmaster® - American Thunder™ 409 SS Axle-Back Exhaust System with Split Rear Exit

Posted by Patrick (Killeen, TX) / April 04, 20222019 Ram 1500

4 of 5

Love It

I am in joying my American thunder cat back exhaust system on my 2006 Durango I have no complaints it now sounds like a Hemi instead of a typical mom car

Flowmaster® - American Thunder™ Stainless Steel Cat-Back Exhaust System with Dual Rear Exit

Posted by Johnathan (Temple, TX) / August 07, 20212006 Dodge Durango

3 of 5

OK, but Not Great. Poor Value for the $.

First issue was probably the fault of the carrier, but the system arrived with the box utterly destroyed. Somehow, none of the parts were missing or damaged except for the Flowmaster stickers. Value for the cost seems to be... not great. The hanger rods lack the retaining barb at the end like the stock hangers and instead you're supplied with cheesy push-on retaining washers that will probably rust through the first winter here in the Northeast. The supplied muffler clamps are cheap and flimsy as compared to decent quality ones. The U-bolts are thin and the nuts are only 1/2" hex, not 9/16" and lack the heavy integrated locking washer that the nuts on heavy duty clamps come with. In hindsight, I should have tossed the supplied clamps and bought decent ones to replace them. The biggest issue is that as supplied, the driver's side tailpipe was too short. Assembled using adequate engagement with the muffler outlet, the pipe was touching the differential cover on the rear axle. I had to purchase and insert a 2-1/2" ID X 2-1/2" OD adapter (and some decent clamps) between the muffler outlet and tailpipe in order to space the tailpipe back far enough to prevent the pipe from rubbing through the diff cover and allow the rear axle to be serviced without removing the tailpipe. I expected better fitment from an established company like Flowmaster. On the positive side, the muffler seems to be built very well and the system sounds pretty good. The chrome tips were plated well and look good. The included option of running the exit straight back or out the side was a nice touch. Would I purchase it again, now knowing what I know? Maybe. Would I recommend it to someone without the skill and abilities to correct the deficiencies I found and related above? No.

Flowmaster® 17428 - American Thunder™ Aluminized Steel Cat-Back Exhaust System with Split Rear/Side Exit

Posted by Customer / July 21, 20211999 Chevy Silverado 1500

5 of 5

American Thunder

I installed this system on my 2019 Chevy Silverado High Country and it was a welcomed upgrade. The sound is not overpowering at start and idle but when accelerated it provides a throaty sound. I recommend this to all Chevy Silverado owners. You will not be disappointed.

Flowmaster® 817895 - American Thunder™ 409 SS Cat-Back Exhaust System with Quad Rear Exit

Posted by Jim (Peabody, MA) / June 29, 20212019 Chevy Silverado 1500

Questions and Answers

(0)

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