fullertonbicycle

BB30 Thread Together Bottom Bracket

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$69 $138 In stock

一體成型鋁合金外殼，確保軸承精準對位並與車架緊密契合，減少五通異音及軸承過早磨損。


  • ABEC-3 密封軸承
  • Grade 10 鉻鋼珠，52100 高碳鉻合金珠槽