DRC Rear Sprocket 520 D6257 Aluminium for Honda DRC DRC rear sprocket D6257. See if it fits your bike. Honda CR 125 Honda CR 250 R Honda CRF 150 F Honda CRF 230 F Honda CRF 250 F Honda CRF 250 R Honda CRF 250 RX Honda CRF 250 X Honda CRF 450 L Honda CRF 450 R Honda CRF 450 RL Honda CRF 450 RX