Bottom Bracket

Mainstream bicycle brands, each has their optimal bottom bracket standard. Pressfit variation proliferated. On C-BEAR bottom bracket chart, pressfit took up 8 columns and it is not even exhaustive, some Cannondale variations are not on the list, see separately C-BEAR Cannondale bottom bracket demystified chart.
Specialized, is among the early “switchers” from pressfit to threaded bottom bracket, namely BSA. Then Cannondale (BSA), Trek (T47), subsequently also take the same route. Even more are taking the same decision.
C-Bear proactively had a headstart in offering T47 (internal, external and asymmetrical) even for Campagnolo and DUB (no spacer required on the drive side for maximum stabilty and optimal power transfer).
Threaded bottom brackets from original BSA/ITA , now added T47 (internal, external , asymmetrical) and T45 (Colnago).

Bottom bracket variations:

Threaded :

• BSA/ITA
• T45
• T47 internal
• T47 external
• T47A (asymmetrical)

Pressfit:

• PF86/92
• BB90/BB95 (Trek) standard bearings
• and V2 Bearings to be used in BB90 or BB95 shell when bottom bracket bearing bore is slightly oversized
• BB30
• BB30A and BB30-83 Ai (Cannondale)
• OSBB (Specialized)
• BB30
• Pf30
• PF30A and PF30-83 Ai (Cannondale)
• BB386
• BBRight

For those who have creaking problem with BB30 bearings direct mount, C-bear has the PF42-30 where bearings are first installed into a pressfit cup, which is then press into the bottom bracket shell – increase stiffness.

A list of the bottom bracket standard of various bicycle brands, this is not exhaustive and is continually evolving. (Any missing or need to be corrected, please email us to update, thank you.)

PF 41:
BMC
Canyon
Giant
Ridley uses PF41 and PF30 bottom brackets
Scott
Wilier

BB386:
3T
BH
Open
Orbea

BBRight (BBR):
Cervélo, some models with T47A
Factor, some models with T47A

Newer /some models to threaded bottom bracket:
Argonaut T47
Cannondale BB30, BB30A, PF30, PF30A , BSA (Lab71)
Colnago switched from T45 to T47 bottom brackets
ENVE
Felt, some models with T47
Pinarello, still with ITA
Standert, T47
Specialized OSBB (osbb, bb30, pf30), more recent models with BSA threaded bottom brackets
Trek bb90/95, variant with V2(oversize) bearings, T47 internal

Still confused, C-BEAR KISS – keep it simple and straight forward, just email us or your preferred C-Bear authorized reseller and we will clarify which is the compatible bottom bracket to bring out the best performance from your choice of bicycle frame + crankset.