THM Bottom Bracket
| Article number: | 025-02-01 |
| Availability: | In stock (2) |
As a standard, THM cranks use a 30mm spindle. In order to satisfy an ever growing market of new bottom bracket standards, THM has created several BB’s to be used with their Clavicula, M3 cranks, and 68mm wide mountain bike cranks in the following bottom bracket shell sizes. Select THM bottom brackets are available with hybrid ceramic bearings.
BSA - Fits standard bottom bracket shells with English facing threads (1.37" x 24 TPI).
Italian - Fits standard bottom bracket shells with Italian facing threads (36mm x 24 TPI).
BB30 - Fits BB30 frames.
PF30 - Fits oversized BB30 frames, which are specifically Press Fit.
BB Right - Fits Cervelo and some 3T frames, shell is 11mm wider on the non-drive side
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- Direct Fit - Fits R5ca Frames only
- Press Fit - Fits all other Cervelo frames and some 3T frames
*Shimano PressFit - Compatible with BB86 frames.
**Specialized OSBB - Specialized's PF30 and OSBB standards are unique to some models of Specialized bikes. In other words, the PF30 on a Specialized is not the same PFC30 on another bike.
| BB Shell | BB Shell Width | Threaded | Weights | Ceramic | ||
| Diameter | Road | MTB | ||||
| BSA (English) | 33.6 mm | 68 mm | 73 mm | Yes | ~72g | Yes |
| Italian | 36 mm | 70 mm | - | Yes | ~72g | Yes |
| T47 External | 47 mm | 68 mm | 73 mm | Yes | ~90g | Yes |
| T47 Internal | 47 mm | 85.5 mm | 89.5 mm | Yes | ~114g | Yes |
| *BB86 | 41 mm | 86.5 mm | 91.5 mm | No | ~51g | No |
| BB30 | 42 mm | 68 mm | 73 mm | No | ~89g | Yes |
| BBRight (DirectFit) | 42 mm | 79 mm | - | No | ~90g | No |
| **OSBB (FACT) | 46 mm | 61 mm | - | No | ~51g | Yes |
| PF30 | 46 mm | 68 mm | 73 mm | No | ~114g | Yes |
| BBRight (PressFit) | 46 mm | 79 mm | - | No | ~90g | No |
| 386EVO | 46 mm | 86.5 mm | - | No | ~51g | No |
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