ZETA Crankcase Protector ze55-2051 F3946 for Honda ZETA ZETA crankcase protector F3946. See if it fits your bike. Honda CRF 250 R Honda CRF 250 RX Honda CRF 450 L Honda CRF 450 R Honda CRF 450 RL Honda CRF 450 RX Honda CRF 450 X