BSA30 Ceramic Bottom Bracket
AITA BSA30 ceramic bottom bracket converts English thread frames to fit 30mm spindle EVO386, Rotor 3D+, Rotor 3DF, THM and Zipp cranks. But BB30 standard cranksets won’t work with this system.
This is a very ideal conversion bottom bracket to run an EVO386 30mm cranks on an English thread (BSA) frame without spacers.
However, with the other cranks such as Rotor 3D+ there will be two spacers required but all come with the bottom bracket.
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 20% of the power compared with a steel bearing bottom bracket in average, plus the bearings will last 3-5 times longer.
For this particular oversized bearing and the aluminium house, an installation tool is provided for an easier installation.
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;
BSA 1.37"x24TPI English Thread;
30mm spindle cranksets;
i.e. EVO386,Rotor 3D+, Rotor 3DF, THM and Zipp;
Note: Installation tool included
- Frame requirement:
- BSA 1.37"x24TPI English Thread; 68mm width
- Crank compatibility:
- 30mm spindle cranksets
This bottom bracket works well. I just installed it with EC90 cranks and feels great - smooth and easy. I did have to add spacers to the cups to get the right width beyond what came in the package, but that was not an issue with the product.
These ceramics bb are truly a wonderful thing. It took a few days with hundreds of miles to get broken in. It's now super smooth! Thank you once again for making such wonderful bottom brackets. I plan on getting a couple more real soon for my other bike. I'll be needing a Pressfit BB30 for a FSA BB386EVO crankset. THANKS!!