Cook Bros Racing Threadless ABEC5 Headset

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At the heart of the Cook Bros. Racing threadless headset are two super-smooth, 45×45, sealed bearings. A split aluminum crown race makes installation and removal from forks super e asy. But there is more! Despite this being a threadless headset with cups, the 45x45 bearings also work in integrated headset applications. Toss the cups, pop the bearings in your new frame, and roll! Show more