Promax 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 Bottom Brackets sold with most crank sets...
Available in anodised Red, Blue, Gold and Black; to fit all 24mm bottom bracket spindles and frames with 68mm or 73mm wide bottom bracket shells.
- 103 grams/3.63 ounces
- External Euro Bottom Bracket
- 68/73mm Spacer Included