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Box Two External Sealed Bottom Bracket

MSRP: USD $‎54.99

USD $‎54.99
SKU: BX-BB17000EX-BK
MSRP: USD $‎54.99

USD $‎54.99

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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™ External Bottom Brackets are designed to fit all 24-millimeter crank spindles and frames with 68 or 73 x BC 1.37-inch bottom bracket shells.

CompatibilityBox Three™, Box Four™, Shimano HollowTech II, RaceFace X-Type
Material6061-T6 Aluminum
Shell Width68/73mm
Spindle Type24mm
Thread1.37 Inch x 24 TPI (English)
Weight105 grams / 3.7 ounces