The senko was the 2010 replacement for the full track pro.
According to official Koga website, the Full Pro Track is still available, and the Senko isn't Scandium, which explains why it's so cheap. Senko looks like identical tube shapes, so presumably it's just made from thicker walled 7005 aluminium to keep the strength up, in which case it should be a bit heavier than the FPT, but also fractionally stiffer.
According to official Koga website, the Full Pro Track is still available, and the Senko isn't Scandium, which explains why it's so cheap. Senko looks like identical tube shapes, so presumably it's just made from thicker walled 7005 aluminium to keep the strength up, in which case it should be a bit heavier than the FPT, but also fractionally stiffer.