T47/73 30mm MTB
With this purchase, you support World Bicycle Relief with 10 % of the product value.
Product description
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 kit pairs those bb’s with 30mm spindle cranks. The cups have CeramicSpeed bearings pressed in. There are two bearing options. The Standard Bearing has CeramicSpeed Balls and hardened-steel races. The Coated Bearing has the same balls running on a 3-micron thick coating placed on top of those hardened-steel races for greater durability and less friction still.
This BB is compatible with 73mm frames.
Bottom Bracket tool for installation: BBT-79.
In the box:
- 2 cups with bearings installed
- 2 1mm spacers
- 2 0.5mm spacers
- 2 dust covers
- O-ring
- Spacer tube
- All Round Grease
- Decal
Lowest Friction
Optimized Power Transfer
Longest Product Lifetime
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General Maintenance for CeramicSpeed Bottom Bracket and Wheel Bearings
Installation of 30mm cranks on CeramicSpeed Bottom Brackets
CeramicSpeed Threaded Bottom Bracket installation guide