Muffler IMCA Spec 2.25in Inlet 2.25in Outlet

The Muffler IMCA Spec 2.25in Inlet 2.25in Outlet by SCHOENFELD is purpose-built for bracket racers and dirt track competitors running IMCA-sanctioned classes. This muffler is engineered specifically for vehicles operating under strict IMCA technical regulations, where emissions compliance and noise suppression must meet series specifications without sacrificing exhaust flow efficiency. Whether you're preparing a car for weekend bracket racing, circle track competition, or street-legal performance driving, this spec-compliant muffler ensures you pass tech inspection while maintaining competitive engine performance.

Engineered with matched 2.25-inch inlet and outlet diameters, this SCHOENFELD muffler maintains consistent exhaust velocity and backpressure characteristics critical for naturally aspirated and supercharged engines in the IMCA platform. The symmetrical flow path minimizes turbulence and resonance while keeping decibel levels within sanctioning body limits—typically 95–100 dB depending on local track regulations. Its compact 9-inch length allows flexible mounting in tight engine bays common to bracket race cars and circle track vehicles, while the relatively light 2.15-pound construction helps preserve weight savings in lightweight competition builds. SCHOENFELD's design prioritizes durability under sustained high-RPM operation, with internal baffles optimized to balance noise reduction and scavenging efficiency.

This muffler is ideal for engine builders and crew chiefs assembling IMCA-legal powerplants in small-block and mid-size platforms, including Ford, Chevrolet, and Mopar applications common in dirt modified and bracket racing classes. Installation requires standard 2.25-inch exhaust tubing, and the reversible inlet/outlet configuration offers flexibility in tight engine compartments. Verify your specific IMCA division's noise and emissions requirements before purchase, as specifications can vary by region and class. Pair this muffler with a mandrel-bent 2.25-inch exhaust system and quality header work to maximize both compliance and performance gains at the track.