Flowmaster American Thunder True Dual Cat-Back Exhaust for 2025+ Ram 1500 - 818199

The Flowmaster American Thunder Cat-Back Exhaust System, part number 818199, is designed for 2025-2026 Ram 1500 trucks equipped with the 3.0L Standard Output or High Output engine. Built from durable 409 stainless steel, this true dual exhaust system features dual 3-inch inlet pipes, dual 3-inch mandrel-bent tailpipes, a Super 40 Series chambered muffler, and Flowmaster’s Scavenger X-Pipe with D-Port technology. Tuned rear resonators help maintain a more comfortable in-cab experience, while dual 4.5-inch black ceramic-coated stainless steel tips exit through the factory bumper openings.

Key Features & Specs:

• Series: Flowmaster American Thunder
• Type: True dual cat-back exhaust system
• Engine Compatibility: 3.0L Standard Output and High Output
• Material: 409 stainless steel
• Tubing Diameter: Dual 3-inch
• Tubing Construction: 16-gauge mandrel-bent stainless steel
• Muffler: Flowmaster Super 40 Series
• Muffler Design: Chambered
• X-Pipe: Flowmaster Scavenger X-Pipe with D-Port technology
• Resonators: Dual tuned rear resonators
• Sound Level: Aggressive to moderate
• Exit Style: Dual rear exit
• Exit Location: Factory bumper cutouts
• Exhaust Tips: Dual 4.5-inch black ceramic-coated 304 stainless steel
• Tip Style: Angle-cut, rolled-edge
• Standard Output Models: Converts the factory exhaust layout to a true dual-style system
• Drivetrain: 2WD and 4WD
• Performance: Maximum tested gains up to 35 hp and 33 lb-ft at the rear wheels on High Output models
• Installation: Uses factory hanger locations and connections
• Included: Installation hardware and instructions
• Part Number: 818199
• Warranty: Flowmaster Lifetime Limited Warranty

Fitment:

Fits applicable 2025-2026 Ram 1500 models equipped with the 3.0L Standard Output or High Output engine.

• 2025-2026 Ram 1500 Big Horn
• 2026 Ram 1500 Express
• 2025-2026 Ram 1500 Laramie
• 2025-2026 Ram 1500 Limited
• 2025-2026 Ram 1500 Limited Longhorn
• 2025-2026 Ram 1500 Lone Star
• 2025-2026 Ram 1500 Rebel
• 2025 Ram 1500 Special Service
• 2025-2026 Ram 1500 Tradesman
• 2025 Ram 1500 Tradesman HFE
• 2025-2026 Ram 1500 Tungsten
• 2025-2026 Ram 1500 Warlock