AITA BBright Shimano ceramic bottom bracket converts BBright frame to accept Shimano 24mm spindle cranksets. Different from the other's PF30 bottom bracket plus adapter option, this ceramic bottom bracket is an integrated unit which requires no adapter or spacers.
In addition, both sides ceramic bearings are outside of the BBright frame which are as same as the Shimano external bottom brackets give the crank arms the direct support. Hence this system runs much more stable, reliable and performs better.
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, AITA's ceramic bearings run much smoother than most of the bearings in the market and only consume 21% of the power compared with Shimano Dura Ace 7900,Dura Ace 9000, and Ultegra in average, plus the bearings will last 3-5 times longer.
Unique maintenance free dust cups come as standard.
2 year warranty.
Free shipping worldwide.
CNC aluminium external BB 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;
BBright standard frame, such as Cervélo BBright frames;
Shell inner diameter 46mm and width 79mm;
24mm spindle road cranksets, such as Shimano, FSA etc;
i.e. Dura Ace (9000), Dura Ace Di2 (7900), Dura Ace (7900/7800), Ultegra Di, Ultegra (6800/6700/6600), Ultegra SL, 105 10 (5600/5700), Shimano Compact, FSA Gossamer etc.
Reference: BBright standard