2-1/2in Max Flow Muffler

The HOOKER 2-1/2in Max Flow Muffler is engineered for boaters and marine engine builders who demand unrestricted exhaust flow without sacrificing noise control. Whether you're running a high-performance inboard, outboard retrofit, or freshwater cruiser, this maximum-flow design eliminates restrictive backpressure that can rob your engine of horsepower and efficiency. Built for serious water enthusiasts who understand that stock exhaust systems compromise both performance and longevity on the water.

Constructed from aluminized steel, the 2-1/2in Max Flow Muffler features a 2.5-inch offset inlet and 2.5-inch center outlet configuration that minimizes flow restrictions while maintaining balanced exhaust scavenging. The compact 10.25 x 4.75-inch oval body measures 14 inches in length, fitting tight engine compartments without requiring complex re-engineering. Aluminized construction resists saltwater and freshwater corrosion far better than bare steel, extending service life through multiple seasons of heavy use. The maximum-flow internal design reduces back pressure, allowing exhaust gases to exit efficiently—critical for maintaining cylinder scavenging and preventing heat buildup in high-load situations.

This muffler suits retrofit installations where OEM exhausts prove undersized or corroded beyond use. Marine mechanics and weekend boaters alike value its straightforward bolt-on design for both inboard V-8 and smaller displacement engines running 2.5-inch exhaust piping. Installation requires matching your existing exhaust diameter and verifying inlet/outlet orientation before mounting. The 11.35-pound unit integrates seamlessly into custom headers or OEM manifold setups, making it ideal for restoration builds, performance upgrades, or routine replacement on aging hulls.