Made from 6061-T6 billet aluminium. Available in 5 colours.morn Replaces OEM original spacers. Designed not to fall out when you change wheels. Eliminates that third hand when changing wheels. CNC machined from billet aluminium. Fitment. RHK Kawasaki Green Axle Spacers Front KX 450 F 2019-2022 RHK Kawasaki Green Axle Spacers Front KX 250 XC 2021-2022 RHK Kawasaki Green Axle Spacers Front KX 450 X 2021-2022 RHK Kawasaki Green Axle Spacers Front KX 250 F 2021-2022