ERAMICSPEED bottom bracket BB86  Coated | Shimano 

The bottom brackets from the Danish company CeramicSpeed represent the absolute high-end solution for all racing drivers who place the highest value on lowest friction with best power transmission.CeramicSpeed bottom brackets are suitable for all conditions and ensure unsurpassed smooth running in any terrain. This makes you faster and more effective with the same effort.
The advantages of ceramic compared to steel bearings are obvious. They have less friction with a longer service life.
All bearings are handcrafted in Denmark and installed in high-precision cups made in Europe. No hydraulic presses are used during assembly. Manual assembly eliminates manufacturing tolerances and guarantees a 100% fit. So that you really only use the best on your bike!

Coated
Compared to the already high-quality standard bearings from CeramicSpeed, the "coated" version has a wafer-thin protective layer on the bearing rings. The latter become even harder, have a further 60% longer life cycle and even lower rolling resistance.With this bottom bracket you can install a crank with 24 mm shaft in a frame with 86.5 mm housing width.