Rattray, a former World Champion, finished second overall in the 250cc Motocross Championship last summer and finished second overall in the MX1 classification at the 2011 FIM Motocross of Nations.
“We are excited to welcome Tyla to the team,” said Reid Nordin, Monster Energy Kawasaki Senior Manager. “He has proven to be a contender for a national championship each and every year, and we are confident he can put
Rattray has spent the last two weeks preparing for the outdoor season and is excited about the opportunity to race for Monster Energy Kawasaki on the championship proven KX450F.
“I’m pumped to race the 450cc class with Monster Energy Kawasaki,” said Rattray. “I know both the team, and the bike can win championships. I couldn’t be more thankful to everyone allowing me to have this opportunity.”
The 2012 AMA Pro Motocross Championship kicks off with the Hangtown Motocross Classic in