1978 American Motocross - Jim Gianatsis
Jim Gianatsis testing Bob Hannah's 250cc National and Supercrosso Championship winning Yamaha OW26.

Jim Gianatsis testing Bob Hannah's 250cc National and Supercrosso Championship winning Yamaha OW26.

Jim Gianatsi, Keith McCarty, Bob Hannah, May 1978

YamahaOW26250cc1978AMA SupervrososAMA outdoor National