Supercross is about speed. Bullet-fast reflexes are required to adjust to concentrated obstacles. Hesitation can be disastrous. And like the tracks sculpted and shaped each week of the series, race teams are constantly changing. At the first round of the Monster Energy AMA Supercross series, the Dirt Rider crew stomped through the saturated pits seeking out the biggest changes of the off-season. In the following pages you'll find new guys on new teams, old guys on new teams and new teams with new and old guys (whatever that means).