My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Flowmaster 817819 American Thunder Cat-Back Exhaust System

(2018-2025 Jeep Wrangler)

Manufacturer

Part Number

817819
Sale Price

$1,117.95

In Stock (5)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster American Thunder Cat-Back Exhaust System delivers a perfect balance of performance and sound for enthusiasts seeking a moderate to aggressive exhaust tone. This complete cat-back system features mandrel-bent stainless steel tubing for maximum exhaust flow and durability, ensuring years of reliable performance.

Key Features:

  • 80 Series Cross-Flow Performance Muffler for enhanced exhaust flow and deep, aggressive sound
  • Mandrel-bent stainless steel construction resists corrosion and maintains consistent diameter for optimal flow
  • Large 4.00-inch black ceramic coated exhaust tips for a bold, custom appearance
  • Utilizes factory hanger locations for straightforward bolt-on installation
  • Engineered to minimize interior resonance while maintaining an aggressive exterior tone
  • Backed by Flowmaster's Lifetime Limited Warranty

This American Thunder system is designed for vehicle owners who want to upgrade their exhaust note without excessive drone inside the cabin. The stainless steel construction ensures long-lasting performance in all weather conditions, while the precision-bent tubing maintains exhaust velocity for improved engine efficiency. Professional installation recommended for best results.

Products specifications

Fits

2018-2025 Jeep Wrangler

Tip Cut

Angle

Tip Edge Style

Cut

Tip Finish

Black Ceramic Coated

Tip Material

304 Stainless Steel

Tip Shape

Round

Tip Type

Double Wall

Tubing Material

409S Stainless Steel

Tail Pipe Material

409SS

Inlet Inside Diameter

2.500 in.

System Type

Cat Back

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

California Proposition 65 Chemical Name 2

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name 1

Nickel (metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Exit Position

Dual Out Rear

Heat Shield Attached

No

Muffler Count

1

Tip Diameter

4.000 in.

Tubing Diameter

2.500 in.

Material

409 Stainless Steel

Tip Quantity

2

Tail Pipe Diameter

2.500 in.

Exhaust Type

Cat-Back

Muffler Body Length

15.000 in.

Muffler Outlet Diameter

2.500 in.

Muffler Overall Length

32.000 in.

Single or Dual

Dual

Muffler Inlet Diameter

2.500 in.

Tip Length

5.250 in.

Brand

Flowmaster

Catalytic Converter Included

No

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

Welded

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Angle Cut

Exhaust Tip Finish

Black Ceramic Coating

Exhaust Tip Intercooled

No

Exhaust Tip Length

5.25

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

2

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Double Wall

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Type

Clamp-On

Mount Type

Uses Factory Hangers

Mounting Bracket Included

No

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Color

Black

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Inlet Location

Offset

Muffler Outlet Location

Dual

Muffler Outlet Quantity

2

muffler part number

Kit Only

Muffler Quantity

1

Muffler Series

80 Series Crossflow

Muffler Type

Reflection

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Resonator (Front) Type

Reflection

Sound Level

Aggressive / Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

2

Tail Pipe Quantity

Dual

Tail Pipe Tapered Outlet

No

Tip Logo

Embossed

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Always happy with the service and the product.

Very easy

Fast and easy

Had problems using the search tool so I called direct. They helped locate Air Lift shocks I needed and told me that I.E. browser is sometimes a problem. They were helpful and my items got shipped the next business day.

Simple and fast purchase would do business with again.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy