New 2011 Honda CRF 450R Motocross...the bike that redefined Open Class racing gets a new throttle body, new fuel injector, and new ECU mapping so the engine makes more low end and midrange torque and also offers even better throttle response. The power is easier to control, but without any loss of top end--better than ever for intermediate and expert riders alike. And the chassis designers were just as busy, updating the CRF450R subframe and taking the opportunity to fine-tune the subframe's stiffness. A new rear shock link and lower shock mount for improved front/rear balance and better suspension action especially over square-edged bumps.