The Honda CRF250RX was first introduced in 2019, but received a slew of changes for 2020 including a new exhaust cam profile, an optimized combustion chamber shape, and the addition of a gear-position sensor. On the exhaust system, the resonator on the header pipe was removed. Also, the bike’s air filter size was increased by 10 percent and the left-side radiator was enlarged. Among other revisions to the transmission and clutch, the CRF250RX received a lighter frame and swingarm, newly shaped footpegs, and the battery was repositioned 28mm lower. Multiple parts of the rear brake were new along with the graphics.