The die-cast backplate and high-flow, washable air filter provide large volumes of clean, stable air to the engine. The crankcase breather system utilizes individual breather hoses that direct the breather gases into the mouth of the carburetor, or EFI induction module, to minimize excess oil in the system. Kit includes all required hardware and installation instructions. All eFI-equipped models require eCM calibration* (priced separately). For race application only.