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

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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
Defined Color ListBlue
Spindle Interface TypeShimano Hollowtech II
BB Shell Width (mm)68mm
BB Shell Width (mm)73mm
Spindle Interface TypeFSA MegaExo
BB StyleEuro
Spindle Interface TypeFSA MegaExo Light
BB/Frame InterfaceEnglish
Bottom Bracket Shell I.D.1.37
Spindle Interface TypeRaceFace EXI

This product was added to our catalog on December 22, 2019