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Box Two Alloy External Bottom Bracket

Box Components


Box Two External bottom brackets feature cold-forged and CNC-machined alloy cups, dual-labyrinth bearing covers and
precision sealed bearings. They are the perfect match to Box Three™ and Four cranks, and the ultimate upgrade to the
budget BBs sold with most cranksets.

Box Two 24mm External Bottom Brackets are designed to fit all 24-millimeter crank spindles
(Shimano Hollow Tech II, Race FAce X-Type, Box Three, Box Four)

Box Two 30mm Only compatible with Box One M30, Box Two M30 or Praxis M30 cranksets.

24mm • Supplier Part # BX-BB17000EX-BK
UPC: 616043825922

30mm • Supplier Part # BX-BB1730BX1-BK
UPC: 616043829722

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