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Flowmaster 818199 American Thunder Cat-Back Exhaust System

(2025 Ram 1500)

Part of: Flowmaster American Thunder Cat-Back Exhaust System

Other options in this family: Flowmaster 17395 Flowmaster 817568 Flowmaster 17213 Flowmaster 818196 Flowmaster 818176

Manufacturer

Picture for manufacturer Flowmaster

Part Number

818199
7 reviews
Sale Price

$1,572.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster 818199 American Thunder Cat-Back Exhaust System delivers a complete performance upgrade with aggressive sound and proven power gains. This complete cat-back system converts standard output models to a true dual exhaust configuration similar to High Output and RHO factory setups, maximizing exhaust flow and unleashing your engine's potential.

Performance Benefits:

  • Increases up to 35 horsepower and 33 lb-ft of torque over stock exhaust at the wheels
  • 3.0-inch mandrel bent 16-gauge 409 stainless steel tubing for maximum exhaust flow and durability
  • Super 40 series muffler produces a deep, aggressive to moderate performance tone
  • Converts standard output models to true dual style exhaust system

Quality Construction:

  • Black ceramic coated stainless steel tips for custom appearance and corrosion resistance
  • Factory styled hangers mount in stock locations for bolt-on installation
  • Complete hardware kit included for straightforward installation
  • Tuned for optimal sound quality inside and outside the vehicle
  • Backed by Flowmaster's Lifetime Limited Warranty

Engineered for enthusiasts seeking both performance and sound, this American Thunder system combines premium materials with proven design to deliver noticeable gains in power and an unmistakable Flowmaster exhaust note.

Products specifications

Fits

2025 Ram 1500

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

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Color

Black

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled Edge Angle Cut

Exhaust Tip Finish

Black Ceramic Coating

Exhaust Tip Intercooled

No

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

2

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Single Wall

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Inlet Diameter

3.00

Inlet Type

Clamp-On

Mounting Bracket Included

Yes

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 Inlet Location

Dual

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Location

Dual

Muffler Outlet Quantity

2

Muffler Quantity

1

Muffler Type

Chambered

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Resonator (Rear Left) Type

Chambered

Resonator (Rear Right) Type

Chambered

Sound Level

Aggressive / Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

2

Tail Pipe Tapered Outlet

No

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Zzzz

fast excellent

Good service and product

Need a taller Springfield plug-in post for pontoon boat to create a small grill table. You had the best price at the time . Item arrived and is a perfect fit. Very happy customers! Will consider your company for any further boat items.

So the low stars because, I received the products in two different boxes, which there didn't seem to be any reason as they would have fit in one. The order didn't indicate that there were two different boxes and they showed up days apart. I then contacted you via customer support being worried and no one reached out.

Easy and fast

Easy to shop, good prices

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