Shell : 37mm X 86.5/92mm

Axle: 24mm - ( Shimano & others)

Cups: Direct Frame Fit

UCB'S ProTec Ceramic Bearing BB Unit

C2 Tolerances, G3 Ceramic balls, precision POM retainers

These bearings are HAND ASSEMBLED.

Cryogenic corrosion resistance treatment of the races of the bearing

Unrivaled reliability and performance. Even against the most well known brands

these are the pinnacle of our bearing tech.

life Warranty*


G3 grade silicon nitride –Si3n4 balls fitted to every bearing 

All units hand assembled in the UK.

NO QUIBBLE warranty*