T47 is the future of threaded bottom brackets — combining the oversized shell of press-fit with the reliability and serviceability of threads. Our T47 Shimano BB houses Grade 3 silicon nitride ceramic bearings with DLC-coated races in precision-machined aluminum cups. The larger T47 shell means wider bearing spacing for improved load distribution and lateral stiffness. No creaking, no press-fit headaches, just smooth ceramic performance.
What You Get
- ✓ T47 threaded interface — no press-fit headaches
- ✓ Grade 3 Si₃N₄ ceramic balls with DLC-coated races
- ✓ Wider bearing spacing than BSA for improved stiffness
- ✓ Precision-machined 6061 aluminum cups
- ✓ Easy to install and service with T47 tool
- ✓ Future-proof standard adopted by top frame builders
Technical Specifications
| Weight |
86g |
| Seal Type |
Dual-lip contact seals |
| Tolerance |
ABEC-7 |
| Cup Material |
6061-T6 Aluminum, anodized |
| Expected Life |
20,000–30,000 miles |
| Race Material |
52100 Chromium Steel, DLC Coated |
| Shell Standard |
T47 (threaded, 47mm x 68mm) |
| Bearing Material |
Grade 3 Silicon Nitride (Si₃N₄) |
| Spindle |
24mm (Shimano Hollowtech II) |
Compatibility
Shimano Dura-Ace FC-R9200 / FC-R9100
Shimano Ultegra FC-R8100 / FC-R8000
Shimano 105 FC-R7100 / FC-R7000
Any T47 threaded frame (68mm or 86mm shell)
Compatible with most modern frame manufacturers using T47