Flowmaster’s® American Thunder Direct-Fit Muffler system for the 2025 RAM 1500 3.0L High Output is an easy, affordable performance upgrade. Built from durable 409 stainless steel, it fits both 2WD and 4WD models and features dual 3-inch inlets flowing into a Super 40-style muffler for aggressive sound and performance. It connects to factory tailpipes and delivers up to 18 hp and 15 lb-ft gains at the rear wheels. Uses stock hangers for simple DIY installation. Includes all hardware, instructions

Flowmaster’s® FlowFX Direct-Fit Muffler system for the 2025 RAM 1500 3.0L High Output offers a powerful, affordable upgrade. Designed for 2WD and 4WD models, it features dual 3-inch inlets flowing into a 409 stainless steel straight-through muffler for improved sound and performance. It connects to factory tailpipes, delivers dyno-proven gains of up to 21 hp and 18 lb-ft, and uses stock hangers for easy at-home installation. Includes all hardware, instructions, and is backed by a Lifetime Limite