The Injen RD Series cold air intake for 2002–2007 Subaru Impreza WRX and select STI models is a bolt-on intake system featuring mandrel-bent 6061-T6 aluminum tubing and a serviceable SuperNano-Web dry air filter. Injen cites dyno-proven mid-range gains and the system’s placement behind the bumper for cooler air. The kit includes tubing, filter, hardware and instructions and is backed by Injen's limited lifetime warranty.
Injen 02-06 Subaru WRX (No Wagon) / 04 STi Wrinkle Red Cold Air Intake *Special Order*