Promax
EX-1 Alloy External Sealed Bottom Bracket 68/73mm

One Size

Black

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$54⁹⁹

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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.

Fits all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37" bottom bracket shells

Specifications & Identifiers

BB Style

Euro

Bottom Bracket Shell Width (mm)

68, 73

Bottom Bracket/Frame Interface

English (BSA)

Spindle Size

24mm

Black - One Size UPC

657993125984

Black - One Size MPN

PX-BB13000EX-BK

Tree Fort ID:

333222394463

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PromaxEX-1 Alloy External Sealed Bottom Bracket 68/73mm

Specifications & Identifiers

Customer Questions

Promax
EX-1 Alloy External Sealed Bottom Bracket 68/73mm