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

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

• Spindle Interface Type: Shimano Hollowtech II , FSA MegaExo , FSA MegaExo Light , RaceFace EXI
• BB Shell Width (mm): 68 , 73
• Bottom Bracket Shell I.D.: 1.37
• Defined Color: Black
• BB/Frame Interface: English
• Weight: 102.9