Image Marvin Musquin had a pair of fourths on the day. Credit GuyB Related: Marvin Musquin Ironman MX Photo Blast MX Nationals Pro Motocross Championship 2016 Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 31 of 43Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 8/29/2016 8:30pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter