Enduro T47A External Threaded Bottom Bracket

440C stainless steel bearings pressed into precision machined aluminum T47 cups that simply thread directly into the BB shell.

The T47A (Asymmetrical) specification is a new thread-in standard that has is similar in concept to BBRight (but with threads) that been used by a couple brands, including Cervelo and Factor.

All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. This complete bottom bracket features Angular Contact, 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. Though stainless steel has 20% less load capacity and is slightly softer than Enduro's standard 52100 chromium steel used in most of Enduro's bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements.