Box Two Bottom Bracket Set Black 68/73mm 24mm

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Box Two™ 24mm External bottom brackets feature cold-forged, 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-millimetre crank spindles and frames with 68 or 73 x BC 1.37-inch BSA threaded bottom bracket shells. Compatibility: Box Three™, Box Four™, Shimano® HollowTech II, RaceFace® X-Type Material: 6061-T6 Aluminium cups with ABS plastic sleeve Shell Width: 68mm/73mm Spindle Type: 24mm Bearing Type: Stable outboard position Abec-5 sealed. Thread: BSA 1.37" x 24 TPI Weight: 105 grams/3.7 ounces Show more