04-08 F-150 4.6L/5.4L V8 Flowmaster 17417 American Thunder Cat-back Exhaust System

Flowmaster American Thunder Cat-Back Exhaust System - Part #17417

Upgrade the sound, appearance, and performance of a 2004-2008 Ford F-150 or Lincoln Mark LT with the Flowmaster American Thunder Cat-Back Exhaust System. Engineered for enthusiasts who want a deep, aggressive exhaust tone outside the truck while maintaining a comfortable moderate interior sound, this premium performance exhaust delivers the unmistakable Flowmaster rumble without sacrificing everyday drivability. The system features mandrel-bent 16-gauge aluminized steel tubing paired with a specially engineered Super 40 Series chambered performance muffler to improve exhaust flow, enhance throttle response, and provide the powerful sound that performance truck owners expect. Designed as a direct bolt-on replacement, the kit utilizes factory hanger locations and includes all required hardware for a hassle-free installation. Dual exit options allow the tailpipes to exit behind the rear wheels for towing applications or straight out beneath the rear bumper for a bold, muscular appearance, while polished 304 stainless steel exhaust tips provide the perfect finishing touch.

Key Features

• Flowmaster American Thunder Cat-Back Exhaust System
• Specially designed Super 40 Series chambered performance muffler
• Mandrel-bent 16-gauge aluminized steel tubing for improved exhaust flow
• Aggressive exterior exhaust tone with a comfortable moderate interior sound level
• Dual 2.50-inch tailpipes with optional rear or side exit configuration
• Large 3.00-inch polished 304 stainless steel exhaust tips
• Dyno tuned to maximize performance and exhaust efficiency
• Direct bolt-on installation using factory hanger locations
• Includes clamps, hangers, mounting hardware, and installation components
• Compatible with both 2WD and 4WD models across all wheelbases
• Emissions legal cat-back exhaust design

Benefits

• Produces the iconic Flowmaster performance exhaust sound with improved driving excitement.
• Helps improve exhaust flow for enhanced throttle response and overall engine efficiency.
• Offers versatile dual exit routing to match towing needs or a custom performance appearance.
• Premium aluminized steel construction delivers long-lasting durability and corrosion resistance.
• Polished stainless steel exhaust tips provide a clean, high-performance finish.
• Bolt-on design minimizes installation time without requiring extensive modifications.
• Backed by Flowmaster's 3-Year Limited Warranty for added confidence and long-term value.
  

Product Specifications

• Part Number: 17417
• Product Type: Cat-Back Exhaust System
• Exhaust Series: American Thunder
• Sound Level: Aggressive exterior / Moderate interior
• Pipe Material: 16-gauge aluminized steel
• Pipe Finish: Aluminized silver
• Main Pipe Diameter: 2.50 inches
• Inlet Diameter: 3.00 inches
• Muffler Series: Super 40 Series
• Muffler Type: Chambered
• Muffler Material: Aluminized steel
• Muffler Finish: Black high-temperature coating
• Muffler Dimensions: 10.00 in. long x 10.00 in. wide x 5.00 in. high
• Tailpipe Configuration: Dual
• Exit Style: Dual Out Rear or Dual Out Side
• Exhaust Tip Quantity: 2
• Exhaust Tip Material: 304 stainless steel
• Exhaust Tip Finish: Polished
• Exhaust Tip Diameter: 3.00 inches
• Exhaust Tip Length: 13.00 inches
• Exhaust Tip Shape: Round
• Exhaust Tip Style: Rolled edge, angle cut, single wall
• Clamps Included: Yes
• Hangers Included: Yes
• Mounting Hardware Included: Yes
• Catalytic Converters Included: No
• Drive Compatibility: 2WD and 4WD

Install Difficulty Level

Easy. This direct-fit, bolt-on exhaust system is designed to install using the factory mounting locations with no welding required under normal installation. All necessary clamps, hangers, and hardware are included. An experienced installer can complete the installation in approximately 2 hours, making it an excellent weekend upgrade for most DIY enthusiasts with basic hand tools.

Vehicle Fitment

• 2004-2008 Ford F-150 4.6L V8 (2WD & 4WD, all wheelbases)
• 2004-2008 Ford F-150 5.4L V8 (2WD & 4WD, all wheelbases)
• 2006-2008 Lincoln Mark LT 5.4L V8 (2WD & 4WD, all wheelbases)

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.