Source: Expanded Universe:
(Sometime after Revenge of the Sith)
Kasyyyk Trooper Pilot
Light attack ground vehicle
4.4 meters long
Employed as reconaissance and assault vehicles across the galaxy, speeder bikes are easily modified for almost any conditions. To pilot one through the dense alpine and tropical rainforests of many of the fringe worlds, however, takes an exceptional degree of skill. Scout troopers are intensively trained and selected for the quick reflexes and acute vision required of this demanding vehicle. Second to none in speed and agility on the ground, a small group of Imperial speeder bikes with skilled riders can be a devastating force.