Koyo's philosophy is "Contributing technology to create a higher standard". This philosophy is what leads Koyo to be the world leader in the automotive radiator aftermarket,a core component in the automobile industry. With the phenomenal growth that Koyo has attained, they have set goals to reach a new level of achievement not reached by other manufacturers. Koyo, in its quest to be a global corporate citizen is through its heat exchange technologies wholly dedicated to creating a better world with a special emphasis on value and a vision for the future.

Koyo's popularily in the aftermarket world pushed them to creating one of the world most popular line of racing radiator. Koyo's Racing line of aluminum radiators feature a 56mm (2-7/16 in) core, a 36mm (1-7/16 in), and special OE style copper core. The racing line boasts more than 50 applications featuring the latest in heat exchange technology.