Kona Operator CR suspension bearing kit fits frames from 2019 and 2020. Contains 10 pcs sealed cartridge bearings. All 10 bearings are Enduro MAX (full complement) sealed cartridge bearings. 6 of the bearings have Black Oxide anti-corrosion bearing race treatment. NOTE: If black oxide bearings are not available, Enduro MAX bearings without the black oxide finish may be substituted.