Reducer 2.25in ID 2in OD 4.75in Long

The Reducer 2.25in ID 2in OD 4.75in Long by Schoenfeld is a precision collector reducer engineered for custom exhaust manifold and header applications. This stepped steel coupling is essential for builders transitioning high-flow exhaust paths from larger to smaller diameter tubing, making it indispensable for street performance builds, racing applications, and engine swaps where exhaust routing demands a smooth diameter transition. Whether you're fabricating a custom turbo system, optimizing scavenging in a naturally aspirated engine, or adapting legacy headers to modern piping, this reducer provides the critical junction point that maintains velocity and minimizes turbulence.

Constructed from heavy-duty steel in natural (unpainted) finish, the Reducer 2.25in ID 2in OD 4.75in Long accepts a 2.25-inch inner diameter inlet and steps down to a 2-inch outer diameter outlet over its 4.75-inch length. The tapered design promotes balanced exhaust gas flow while reducing weight compared to flanged alternatives, critical for high-RPM applications where back pressure must be managed precisely. At just 0.41 pounds, this compact adapter minimizes assembly mass without sacrificing structural integrity, allowing builders to maintain optimal power band characteristics across the entire RPM range. The natural steel finish resists oxidation in typical exhaust environments and accepts ceramic or high-temp coatings for enhanced durability if desired.

Fabricators and performance builders benefit most from this Schoenfeld product when custom-fitting headers to downpipes, turbocharger inlet manifolds, or resonator systems that require precise dimensional matching. The compact 2.35 x 2.3 x 5.1-inch envelope allows installation in tight engine bays, and the stepped design integrates seamlessly with TIG welding or slip-fit coupling techniques. Verify inlet and outlet diameters against your existing tubing before ordering; this reducer is designed for direct welding or compression-fit assembly, making it ideal for one-off custom work, race engine builds, and exhaust system upgrades where off-the-shelf solutions fall short.