AITA BB86 Shimano ceramic bottom bracket is fully compatible with Shimano press fit standard frames - BB86/BB91 (86.5mm width). It is a pressfit bottom bracket to fit BB86 standard frames with 24mm spindle Shimano cranks.This BB86 ceramic bottom bracket comes with AITA signature hybrid ceramic bearings built up with Grade 3 Si3N4 ceramic balls and ABEC7 hardened steel races.
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.
Unique designed dust cover improves the durability of the bottom bracket compared with the traditional Shimano’s design.
2 year warranty.
Free shipping worldwide.
Fibre reinforced polymer 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;
Press fit BB86 standard frame with 86.5mm width;
Shell inner diameter 41mm;
24mm spindle cranksets:
e.g. Dura Ace (9000) Dura Ace Di2 (7900), Dura Ace (7900/7800), Ultegra 6800, Ultegra Di2, Ultegra (6700/6600), Ultegra SL, 105 10 (5600/5700), Shimano Compact etc.
Note: This BB86 ceramic bottom bracket is compatible with Shimano INT Dura-Ace SM-BB9141, Dura Ace SM-BB9241, Ultegra SM-BB7241,Shimano SM-BB71 or BB91 Road Press Fit Bottom Bracket, Shimano SM-FC7800P road press fit