GoPro video from the race is always fun to watch.  One thing that surprised me and I still find crazy today is how little the 450’s actually rev to produce the power, torque and speed that they do.  Come out of a corner, blip the throttle and clear a 75 foot triple, insane to me!  The 250’s obviously use the rev’s much more, but not the rev limiter like you’d think.

Action from round nine.

Source: GoPro Toronto | AC, Seely and Millsaps – Supercross – Racer X Online