Blake Wilkey, Robby Gordon, and John Grounds doing what they do best out on the Off-Road Expo Proving Grounds in partnership with @kingofthehammers Live demos all weekend long. Head out to the Phoenix Raceway in Avondale, AZ to check out the proving grounds and shop show specials. Tickets at www.offroadexpo.com #offroadexpo #offroad #offroadracing #arizonaoffroad #azoffroadexpo #speedutv #blakewilkey #robbygordon #johngrounds #provinggroundsracing