Tripeak Ceramica BB90 TREK Central Movement | ABEC5 ceramic

Tripeak BB90 Ceramic Bottom Bracket for Trek Bicycles.

The kit includes 2 Abec5 6805 ceramic bearings and 2 Shimano standard 25mm to 24mm reduction cups.

Abec5 Ceramics

Ceramic bearings utilize G5 grade ceramic balls and are combined with a precision machined steel race, providing excellent rotational performance for cyclists. 


P05 precision steel ball bearings for reassuringly high smoothness and durability. 0.005 mm for raceway eccentricity (out of roundness) on the inner race. 
This is precision