Muffler IMCA Spec 3.0 Inlet 9in Long

The Muffler IMCA Spec 3.0 Inlet 9in Long by SCHOENFELD is designed specifically for sanctioned circle-track racing, street stock competition, and entry-level dirt oval programs governed by IMCA regulations. This compact muffler provides the necessary noise suppression to meet track decibel limits while ensuring the scavenging efficiency that naturally-aspirated engines require during high-RPM operation.

Engineered to IMCA specifications, the 3-inch inlet design accommodates standard 3-inch primary pipes and optimizes flow velocity to minimize backpressure while managing exhaust velocity for consistent scavenging across the RPM range. The 9-inch length is ideal for tight engine bays typical of frame-notched race cars, eliminating the need for complex chassis or exhaust routing modifications.

Weighing only 2.04 lbs, this lightweight construction reduces unsprung mass and thermal load on surrounding components—critical factors in competitive environments. The compact 3.55 x 3.5 footprint allows for installation in confined spaces where larger street mufflers would require welding or rework, making it an excellent choice for competitors in IMCA divisions, ASA, or grassroots circle-track series.