Exhaust› Exhaust Pipes, Systems and Components

Flowmaster

American Thunder Cat-Back Exhaust System Fits 2004-2007 (2007 Classic Only) Silverado/Sierra 1500 Trucks With 4.3L, 4.8L, 5.3L Engine Aggressive To Moderate Sound Flowmaster

$1,286.06

SKU: F00L 17436

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Flowmaster American Thunder Cat-Back Exhaust System delivers an aggressive exterior tone and moderate interior sound. It features heavy 16-gauge mandrel-bent aluminized steel tubing, a Super 50 series performance muffler, and dual 2.50-inch tailpipes. It offers two exit options: straight out the back or exiting behind the rear wheels (suitable for towing). The system is finished with 3.00-inch diameter polished 304 stainless steel tips. Includes all necessary hardware and instructions. Backed by a 3-year Limited Warranty. Emissions-compliant.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFlowmaster
Part NumberF00L 17436

Videos

How to Install Flowmaster American Thunder Exhaust System on a 2019 Chevy/GMC 1500

How to Install Flowmaster American Thunder Exhaust System on a 2019 Chevy/GMC 1500
Flowmaster - American Thunder Exhaust Kit 2005 Chevy Silverado Installation

Flowmaster - American Thunder Exhaust Kit 2005 Chevy Silverado Installation

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy