Box ONE Bottom Bracket B52 35mm

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BOX couldn’t ignore the truth about bottom brackets.Traditional BBs lack the space needed for the stiffness and responsiveness modern riders demand. That’s why they developed the B OX B52 Bottom Bracket — bringing their signature Oversized Technology into your frame and breaking new ground in the bike builder’s world. With a 52mm diameter and 80mm wide shell, the B52 allows for wider chainstays, boosting stiffness and enhancing efficiency through corners and sprints. Power transfer becomes more direct, feedback more immediate — you’ll go further, faster, with less energy wasted. This is Oversized, the BOX way.Stack as many Oversized components as possible and eliminate flex from your setup. The result? A faster, sharper, more responsive ride — built to BOX standards. Show more