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Promax

Promax EX-1 Bottom Bracket

Promax EX-1 Bottom Bracket

Regular price $39.95 USD
Regular price $54.95 USD Sale price $39.95 USD
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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 to fit all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37” bottom bracket shells.
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