Possible Clues:

• Motorcycle Hall of Fame name
• Snake River jumper Knievel
• Robbie Knievel's father
• Name in the Motorcycle Hall of Fame
• Immortal name in daredeviltry
• Robert Craig Knievel Jr., familiarly
• Snake River Canyon jumper
• Knievel who holds the world record for most bones broken in a lifetime
• Robert Knievel, to most
• Stunt man's name