T47 is a standard created by custom frame builders. It’s threaded, has an inner diameter of 47mm, and is 73mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads.
The cups have CeramicSpeed bearings pressed in. The Coated...
Coated T47/73 Bottom Bracket for Shimano MTB
T47 is a standard created by custom frame builders. It’s threaded, has an inner diameter of 47mm, and is 73mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads. This BB is compatible with 73mm frames. Bottom Bracket tool for installation: BBT-69. In The Box
The cups have CeramicSpeed bearings pressed in. The Coated Bearing has CeramicSpeed balls running on a 3-micron thick coating placed on top of hardened-steel races for greater durability and less friction.
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INSTALLATION
Installation of T47/73 Bottom Bracket for Shimano MTB
If you don't have any experience installing bottom brackets and bearings, we recommend that you have your local bike shop fit your new bearings. Find your nearest retailer.
Installation of Shimano cranks on CeramicSpeed Bottom Brackets
MAINTENANCE
Maintenance of CeramicSpeed Bottom Brackets
We recommend that you follow our instructions on how to maintain your CeramicSpeed Bottom Brackets to achieve the lowest friction and the best longevity.