When doing my research on forums and other sites, I found that plenty of people having cooling issues during those long hot track days. Being in Texas, where it can get up to 105 degrees in the summer, we wanted to make this a non issue. We found the Koyo’s 37mm radiator not only fixed this problem, but swapped out perfectly with the OEM without a hassle. This Miata radiator is a complete plug and play application that won’t interfere with thicker aftermarket sway bars. That was a big selling point for me since I are adding some Whiteline products soon after the Koyo radiator install. Just a side note – this thing look so clean! More instal pics after the jump.