Two black circular Box ONE Bottom Bracket B52 35mm mechanical seals with white labeling shown at an angle against a white background—perfect for enhancing power transfer in compatible bike systems.

Box ONE Bottom Bracket B52 35mm

Black / B52 / M35 (35mm-33mm)
$73.90
$73.90 $121.15
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Two black circular Box ONE Bottom Bracket B52 35mm mechanical seals with white labeling shown at an angle against a white background—perfect for enhancing power transfer in compatible bike systems.
  • Two black circular Box ONE Bottom Bracket B52 35mm mechanical seals with white labeling shown at an angle against a white background—perfect for enhancing power transfer in compatible bike systems.
  • Two black, cylindrical metal components with threaded exteriors—Box ONE Bottom Bracket B52 35mm—are shown from different angles on a white background, designed for enhanced bike power transfer using Oversized Technology.
  • A black circular BMX hub guard with white text and branding, made to complement the Box ONE Bottom Bracket B52 35mm for enhanced bike power transfer.
  • Two black, cylindrical threaded metal components—the Box ONE Bottom Bracket B52 35mm with Oversized Technology—are shown side by side against a white background, designed to enhance bike power transfer.
  • Two black circular Box ONE Bottom Bracket B52 35mm mechanical seals with white labeling shown at an angle against a white background—perfect for enhancing power transfer in compatible bike systems.
  • Two black, cylindrical metal components with threaded exteriors—Box ONE Bottom Bracket B52 35mm—are shown from different angles on a white background, designed for enhanced bike power transfer using Oversized Technology.
  • A black circular BMX hub guard with white text and branding, made to complement the Box ONE Bottom Bracket B52 35mm for enhanced bike power transfer.
  • Two black, cylindrical threaded metal components—the Box ONE Bottom Bracket B52 35mm with Oversized Technology—are shown side by side against a white background, designed to enhance bike power transfer.
Box ONE Bottom Bracket B52 35mm

Box ONE Bottom Bracket B52 35mm

$73.90
$73.90 $121.15
ColourBlack
BB TypeB52
Spindle SizeM35 (35mm-33mm)

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 BOX 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.

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