HKS 70018-AT006 Premium Suction Intake Kit Scion FR-S Subaru BRZ GT86 The HKS Premium Line of Suction kits are for those who want maximum performance out of their intake system, but do not want to change any of the intake characteristics. This particular kit keeps the factory air box, replaces the factory air filter with a high flow foam filter, and replaces the factory plastic intake pipe with a hard pipe.