Image Adam Cianciarulo was fast in practice, but also had a big crash. Credit GuyB Related: Monster Energy Supercross Vital MX Pit Bits Adam Cianciarulo St. Louis Supercross 2017 Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 32 of 46Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 4/1/2017 3:42pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter