Revealed: Diamondback Serios Diamondback revealed its first triathlon bike this week in Kona. October 8, 2014 Aaron Hersh Facebook Icon Twitter Icon Email Icon Photo: John David Becker Photo: John David Becker Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app. Photos: John David Becker More from Kona.