Tim Gajser has become a master in the art of scrubbing aboard his Honda CRF450RW: few riders are able to scrub as effectively and spectacularly as he does. In this three-episode series, the Team HRC rider discusses the science behind scrubbing with two well-known former motocross riders of the Honda family: Roger Harvey (HRC World Motocross Adviser) and Gordon Crockard (Honda Motor Europe Off Road Manager).