Specialized Stumpjumper ALLOY 2021-2023 suspension bearing kit. NOTE: Carbon frames for 2021-23 use a different kit. Includes 12 pcs Enduro MAX (full complement) sealed cartridge bearings, all of which are treated with Black Oxide anti-corrosion bearing race treatement. The main pivot bearings are special double-row bearings. NOTE: If black oxide bearings are not available, Enduro MAX bearings without the black oxide finish may be substituted.