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
| Bottom Bracket Shell I.D. |
1.37 |
| BB/Frame Interface |
English |
| BB Shell Width (mm) |
73 |
| Weight |
102.9 |
| Spindle Interface Type |
RaceFace EXI |
| Defined Color |
Black |
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