Inner Diamter: 2.5 inches
TheRD series is a cold air intake system for the enthusiast craving mid-range power. The intake tube is 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. Every RD system is certified or pending by the California Air Resource Board and backed by Injen Technology's limited lifetime warranty.

Check the dyno in the product photos for a look at the real horsepower gains! A must-have first modification or an excellent compliment to modified Mazda MPS3.

Other Part Numbers: SP6062P (Polished) and SP6062BLK (Black)