BB30 EVO386 Ceramic Bottom Bracket

Handling time: one business day
(1 review)
Current Stock:
Adding to cart… The item has been added

AITA BB30 EVO386 ceramic bottom bracket make BB30 frame to fit EVO386 30mm spindle cranksets. Different from the other's BB30 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 moved out from the BB30 frame and extend the supporting width from 68mm to 86.5mm which are as same as the standard EVO386 bottom brackets. Hence with this direct support the conversion bottom bracket 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 20% of the power compared with the steel bearing, plus the bearings will last 3-5 times longer.

2 year warranty.

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;

Frame requirements:
BB30 standard frame;
Shell inner diameter 42mm and width 68mm;

Crankset compatibility:
EVO386 30mm spindle cranksets.


Frame requirement:
BB30 standard frame; Shell inner diameter 42mm and width 68mm
Crank compatibility:
EVO386 30mm spindle cranksets


  • 5
    Very nice BB!

    Posted by Francis, Indianapolis, USA on 24th Oct 2020

    Very nice BB! Will be proud to carry a little bit of AU w/ me on my rides!