2015 HONDA CRF150RB, Just because a rider is younger or smaller in stature doesnt mean that he or she is any less serious about performance. 4-stroke engines currently dominate off-road racing, thanks in part to their superior power-delivery and enhanced traction. so experienced small-bore riders demand nothing less. With virtually no 4-stroke competitors in the category, the CRF150RB stands alone as the obvious choice. Featuring the same advanced Unicam engine design as Hondas championship winning CRF250R and CRF450R motocrossers, the CRF150RB delivers strong, usable 4-stroke power. The MX-spec chassis, complete with inverted Showa forks, disc brakes and aluminum swing-arm is even fitted with larger diameter wheels for improved control in ruts and extreme conditions. 4-stroke power, razor-sharp handling, the CRF150RB has it all. CRF150RB - serious small-bore performance.