SRAM 900 Rear Hub 28H 6-Bolt Disc Black, XDR 11/12 Speed 27.8mm Driver Body, 12x148mm Boost Compatible A1

"Incremental enhancements. Perpetual improvements. Revolutionary Innovation. When advancements are continuously made to every attribute of every component, the result is overall performance that is simply second to none. And to real cycling enthusiasts, there is nothing more gratifying then achieving the ultimate ride. And the best part is we just keep making it better. This is what SRAM is all about."

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The hub drilling is the number of spoke holes. It must match your rim spoke count.

This should correspond to the type of brakes you have on the bike.

12mm Thru x 148 thru axles are often called "Boost"

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