3in Collector 2-1/4in Outlet

The 3-inch Collector 2-1/4-inch Outlet reducer (Model 16010) is a precision exhaust system component engineered for motorsports and high-performance applications requiring controlled flow transition. This collector reducer accommodates a 3-inch inlet diameter and steps down to a 2.25-inch outlet, making it ideal for race engine builders, performance tuners, and off-road fabricators who need reliable stepped-diameter ducting in compact mounting configurations.

Constructed from steel in natural finish, this reducer features a 3-bolt flange mounting design that integrates securely with standard exhaust manifold and piping systems. The included gasket set ensures proper sealing at both inlet and outlet interfaces, critical for maintaining back-pressure integrity and preventing exhaust leakage under sustained throttle. Weighing 2.45 lbs and measuring 5.9 x 5.1 x 8.2 inches, the compact profile allows installation in tight engine bay layouts without sacrificing flow characteristics. Steel construction provides thermal stability under extended high-rpm operation typical of racing and performance street applications.

This collector is suited for engine builders working with naturally aspirated or light-boost motorsports engines where stepped exhaust transitions optimize scavenging efficiency. Off-road fabricators, custom fabrication shops, and performance enthusiasts value reducer components for header construction, turbo inlet plumbing, and intake manifold adaptation. The 3-bolt flange provides repeatable positioning during installation and supports vibration isolation without requiring continuous re-torquing. Supplied as a pair, this product accommodates dual-exhaust or dual-inlet configurations common in V-engine platforms.

Motorsports exhaust components like stepped reducers are foundational to custom exhaust system assembly. This model's straightforward 3-to-2.25-inch transition reduces turbulence during diameter reduction and maintains velocity in exhaust flow paths—factors that directly influence engine breathing and thermal management. Natural steel finish requires protective coating or heat shielding depending on mounting location and exposure to moisture or salt air.