The Spectre polished aluminum inline air box with filter features a 4-inch inlet and outlet and a five-inch outside diameter cylinder to support custom intake builds. It ships with a high-flow HPR filter and lets you route cooler outside air into the engine for potential gains over stock setups. Sized for custom intake fabrication, this inline box works where a compact, finished housing and included filter are desired in a custom system.
Spectre Inline Air Box 5in. w/Filter