Transforming an Indian Challenger into not only a race bike, but a championship-winning race bike able to fight – and win – against the might of Harley-Davidson is no easy task. Indian teamed up with S&S Cycles to build these bikes, with S&S Head Honcho Jeff Bailey also the Chief Engineer of the project. In terms of the modifications and engineering, these are full-on superbikes. Just in different clothes. Per the rules, the main frame is still stock. The shape of the frame-mounted fairing is also the same but is made from lighter materials. The headlights themselves are gone and a vinyl sticker application gives it the appearance of having the stock lights. And that’s just the start of where the line gets blurred between stock and modified.