Promax EX-1 Bottom Bracket [ Colour : Black ]
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EX-1 BOTTOM BRACKET EX-1
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 Promax CF-2 and HF-2 cranks and ultimate upgrade to the budget BBs sold with most crank sets.
Available in anodized red, blue, gold and black, to fit all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37” bottom bracket shells.
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