The RD series is a cold air intake system for the enthusiast craving mid-range power. Most intake tubes are strategically placed behind the front bumper to acquire colder, denser air. Although most of the RD series is a one-piece design, several are two-piece designs due to the mass air flow meters. Nearly all RD intake system is certified or pending by the California Air Resource Board and backed by Injen Technology’s limited lifetime warranty.
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