Shimano Hollowtech II compatible crankset with 440C stainless steel anglular contact bearings from Real World Cycling. This bottom bracket is for "BSA" threaded BB shells and Shimano cranksets. Designed for 68mm and 73mm bottom bracket shell widths. UPDATED auxiliary seals 2024. Please see the product pictures for more information

(SPACERS FOR ROAD AND MOUNTAIN APPLICATIONS INCLUDED!)

Beautifully machined cups, sleeves, and spacers manufactured in the USA and equiped with Enduro angular contact 440C stainless steel bearings.

The bearings are the core component of a bottom bracket system. Of course we use the best. However, it is apparent that not all bottom bracket manufacturers realize that the bearing-to-cup fit has a huge effect on bearing performance. If the fit is too tight, the internal clearance for the ball bearings is reduced, resulting in friction, heat, and premature demise. While our bottom brackets are visually pleasing, our primary focus is on a perfectly toleranced fit. If, after the color anodizing is completed, the fit with the bearing is not perfect, we take the time to re-machine the bearing seat of the cup.

SKU#OBBHT2SS