Muffler 3-1/2 Inlet 2-1/ 2 Dual Outlet

The Muffler 3-1/2 Inlet 2-1/2 Dual Outlet (FLO72469) by Flowmaster is a performance exhaust silencer engineered for vehicles requiring a stepped-down intake diameter with dual outlet discharge. This configuration is ideal for truck and SUV platforms where the stock exhaust manifold or primary piping measures 3-1/2 inches, and you need to transition to a dual 2-1/2-inch outlet setup for improved ground clearance, fitment, or custom dual-exhaust installations. Whether you're building a street machine, upgrading a daily driver, or restoring a classic truck, this muffler delivers the signature Flowmaster acoustic character while managing back-pressure effectively across mid-to-high RPM ranges.

Built with Flowmaster's proven chambered muffler design, this unit uses internal baffle technology to reduce resonance and drone while maintaining scavenging efficiency on naturally aspirated engines. The 3-1/2-inch inlet accepts larger-diameter primary tubes or header collectors, while the dual 2-1/2-inch outlets allow you to run separate tail pipes for a clean, balanced appearance and optimal exhaust gas evacuation. At 15.06 pounds and measuring 8.9 x 5.8 x 25.4 inches, the compact footprint fits tight rear-axle clearances common in truck beds and chassis setups. The aluminized steel construction resists corrosion in harsh climates, ensuring long-term durability without sacrificing the aggressive Flowmaster tone enthusiasts expect.

This muffler is best suited for mechanics and performance builders fabricating custom dual-exhaust systems or upgrading OEM exhausts on full-size trucks, muscle cars, and hot rods. The stepped inlet-to-outlet design eliminates the need for Y-pipe reducers in many applications, simplifying installation and reducing turbulence. Verify your vehicle's primary tube diameter and available under-body clearance before ordering; the compact dimensions work well in tight rear sections, but tail-pipe routing and tip positioning should be confirmed during fitment. Pair this muffler with quality mandrel bends and stainless hardware for a professional, lasting upgrade that balances sound, performance, and reliability.