AITA DUB BSA English Thread Ceramic Bottom Bracket
AITA DUB BSA English Thread ceramic bottom bracket provides the opportunity using SRAM DUB 29mm spindle cranks on an English thread 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.
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;
BSA English threads 1.37″ x 24TPI;
SRAM DUB 29mm spindle cranksets.