Roush 2013-2018 Ford Focus ST / 2016-2018 Focus RS Cold Air KitFrom baseline to redline, ROUSH Performance has you covered with the all new Cold Air Intake System. The engineers at ROUSH designed this kit for improved performance you can hear and feel! All components in this system are direct replacements to the restrictive stock intake, from the air filter to the turbo inlet. This free flowing air intake kit contains a custom ROUSH branded air box that is topped with EPDM foam for an airtight seal to the hood.