YFZ450R AFTER WINNING COUTLESS TITLES, WHATS NEW? EVERTHING! From the championship-collecting original comes the next checkered flag-claiming contender. The YFZ450R has it all, from a hard-hitting all-new engine to true long-travel, racer-inspired suspension. Throw in fuel injection, an aluminum hybrid frame and a wide, MX-inspired stance and you can consider your reservations atop the podium confirmed.