Flowmaster American Thunder Cat-back Exhaust System Fits 2004-2007* (2007 Classic Only) Chevrolet Silverado, GMC Sierra 1500 trucks with 4.3L, 4.8L, 5.3L engine. - Aggressive to moderate sound - 17436

The Flowmaster American Thunder Cat-Back Exhaust System is designed for 2004-2007* Chevrolet Silverado and GMC Sierra 1500 trucks equipped with 4.3L, 4.8L, or 5.3L engines (*2007 Classic models only). This system is ideal for drivers seeking an aggressive exterior sound with a moderate interior tone, offering the perfect balance of performance and comfort.

Constructed with heavy 16-gauge mandrel-bent aluminized steel tubing for durability and maximum performance, the American Thunder system features a Super 50 Series performance muffler that delivers a deep, aggressive exterior tone while keeping interior resonance moderate. The dual 2.50-inch tailpipes are designed to clear the factory spare tire and offer two exit options: straight rear for a true dual look or exiting behind the rear wheels, ideal for towing applications.

The system finishes with a pair of polished 3.00-inch 304 stainless steel exhaust tips embossed with the Flowmaster logo, providing a professional and aggressive appearance. Designed for easy installation, the system includes all necessary parts, hardware, and instructions, and is backed by Flowmaster’s 3-year Limited Warranty.

Key Features

• Aggressive to moderate exterior exhaust sound

• Moderate interior tone for a comfortable cabin

• Super 50 Series performance chambered muffler

• Dual 2.50-inch tailpipes with flexible exit locations

• Heavy 16-gauge mandrel-bent aluminized steel tubing

• Polished 3.00-inch 304 stainless steel tips with Flowmaster logo

• Uses factory hanger locations

• Easy bolt-on installation with included hardware

• Dyno-tuned for maximum performance

• 3-year Limited Warranty

Fitment 

• Year: 2004, 2005, 2006, 2007* (*2007 Classic Only)

• Make: Chevrolet, GMC

• Model: Silverado 1500, Sierra 1500

• Engine: 4.3L, 4.8L, 5.3L

• Body Style: Crew Cab / Short Bed

Technical Specifications

• Brand: Flowmaster

• Exhaust Series: American Thunder

• Type: Cat-Back

• Product Type: Exhaust System

• Part Type: Exhaust System

• Category: Exhaust

• Sub Category: Exhaust and Tail Pipes

• Sound Level: Aggressive / Moderate

• Grade Type: Performance

• Drive: 2WD

• Emission Code: 5

• CARB Compliant: Yes

• California Proposition 65: Yes

• California Proposition 65 Chemical Name: Chromium (hexavalent compounds)

• Catalytic Converter Included: No

Piping & Installation Details

• Main Piping Diameter: 2.50 IN

• Inlet Diameter: 3.00 IN

• Inlet Type: Flanged

• Exhaust Tip Connection: Clamp-On

• Clamping Type: Flat Band

• Clamps Included: Yes

• Gasket Or Seal Included: No

• Hangers Included: Yes

• Mount Type: Uses Factory Hangers

• Mounting Bracket Included: Yes

• Heat Shield Included: No

• Spring Bolt Kit Included: No

Muffler Specifications

• Muffler Series: Super 50 Series

• Muffler Type: Chambered

• Muffler Quantity: 1

• Muffler Body Material: Aluminized Steel

• Muffler Body Shape: Oval

• Muffler Body Length: 17.25 IN

• Muffler Body Width: 10.00 IN

• Muffler Body Height: 5.00 IN

• Muffler Included: Yes

• Muffler Part Number: 530562

Exhaust Tip Specifications

• Exhaust Tip Quantity: 2

• Exhaust Tip Diameter: 3.00 IN

• Exhaust Tip Material: 304 Stainless Steel

• Exhaust Tip Finish: Polished

• Exhaust Tip Cut: Angled

• Exhaust Tip Edge: Rolled Edge Angle Cut

• Exhaust Tip Shape: Round

• Exhaust Tip Wall: Single Wall

• Exhaust Tip Length: 13.00 IN

• Exhaust Tip Intercooled: No

• Exhaust Tip Resonated: No

• Exit Style: Dual Out Rear