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.

For T47A frames using a 30mm BB386 spindle crank set. The bearings seat externally on the bottom bracket.

Vendor Part # BKSR-0286