DUB BB30a Ceramic Bottom Bracket

AITA DUB BB30a ceramic bottom bracket provides the opportunity using SRAM DUB 29mm spindle cranks on a BB30a 42mm ID frame.

With the grade 3 Si3N4 ceramic balls (8 times rounder and 4 times smoother than the steel's), spinning on the hardened ABEC 7 races, this ceramic bottom bracket only consumes 21% of the power compared with a Shimano Press Fit bottom bracket in average, plus the bearings will last 3-5 times longer.

2 year warranty.

Specifications:
CNC alloy bottom bracket cups;
ABEC7 high chrome vacuum degassed bearing steel races with quenching and tempering hardening;
Grade 3 Si3N4 ceramic bearing balls;
Nylon bearing retainer;
Dual lips light contact rubber bearing seals;

Frame requirements:
BB30a standard frame;
Shell inner diameter 42mm and width 73mm;

Crankset compatibility:
SRAM DUB 29mm spindle cranksets.