Image The Smartop MotoConcepts Racing crew opted to change engines on Mike Alessi's bike before the last session...just in case you were wondering why he didn't ride that one. Credit GuyB Related: Monster Energy Supercross Vital MX Pit Bits Toronto Supercross 2017 Mike Alessi Smartop MotoConcepts Racing Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 38 of 48Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 3/4/2017 2:29pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter