FlowFXMuffler 3.5in Cntr In / 2.5in Dual Out

The Flowmaster FlowFX Muffler with 3.5-inch center inlet and 2.5-inch dual outlet is a stainless steel performance exhaust component engineered for universal vehicle applications. This oval-body muffler measures 24 inches in length with an 18 x 8 x 5-inch profile, designed to integrate into custom exhaust systems where sound control and exhaust flow optimization are priorities. The dual-outlet configuration allows flexible routing options on modern and classic platforms alike.

The 3.5-inch center inlet accommodates larger-diameter piping typical of high-displacement or turbocharged engine applications, while the 2.5-inch dual outlets distribute backpressure and reduce restriction across the exhaust exit points. Stainless steel construction provides corrosion resistance and extended service life in harsh environments, including road salt exposure and high-temperature cycling common to performance driving. The natural finish preserves the material's aesthetic while maintaining thermal stability through repeated heat cycles.

This muffler suits builders developing custom exhaust systems for trucks, hot rods, street machines, and performance vehicles where intake-to-outlet sizing flexibility is essential. The universal design permits integration into fabricated systems where OEM components are being replaced or modified for enhanced flow characteristics. At 13.5 pounds, the unit remains manageable for installation while offering the mass necessary for durability under sustained highway and track use.

Flowmaster's FlowFX line focuses on straightforward sound attenuation without the aggressive chambering of performance-oriented mufflers, making it suitable for builders seeking moderate noise reduction alongside efficient scavenging. The oversized oval core design minimizes turbulence and promotes laminar flow, a fundamental principle in exhaust system design that directly affects both power delivery and emissions compliance in street applications.