When you're serious about winning, the CRF150R/RB provides you with a seriously high-tech way to get to the checkered flag first. Its 149 cc liquid-cooled Unicam engine produces the same sort of broad powerband and meaty low-end as the bigger CRFs, and because power comes on less abruptly than with a comparable two-stroke, there's less shifting required. Even the four-stroke engine braking helps when diving into corners! The CRF150R also gives you the handling benefits of a high-tech semi-double-cradle frame with aluminum swingarm and Showa suspension.