- Our BBInfinite DUB Ultra-lite Threaded External Cup Bottom Bracket System work with any DUB MTB (29mm) crank set on the market.
- Weighing in at a skimpy 68 grams for the set, the Ultra-lite DUB bottom bracket delivers smooth, quiet, durable performance in an ultra-compact form factor that allows maximum clearance for power meter back plates. No big, special wrenches needed, just the good old Shimano classic TL-FC33 or ParkTool BBT-19 everyone already has.
ATTENTION: Always "chase and face" your frame bottom bracket shell before installation. Threads must be absolutely clean and clear of debris. Frame bottom bracket shell must be faced to 73mm.
Weight: Ceramitech: 68g | ABEC-7: 72g
(for both cups together)
Frame Width: 73mm MTB
Frame Diameter: BSA English
Spindle Diameter: DUB