and 250GP motorcycle road racing national championships. Lenz recovered and returned to racing in 2010. http://www.youtube.com/v/kU6xrs7SOCc?fs=1&hl=en_US Career Lenz began riding in the dirt on a Yamaha PW50 when he was 5 and quickly started racing it. He soon moved up to a KTM Pro Senior 50. At age 7 he transitioned