Bottom Bracket selection help

[W@nted]

Please assist. My new road frame is in the post. Frame is T47 threaded with 86mm width at the bottom bracket. Crankset is Sram Red GXP. Which BB do I need to order, as the oem sram only offers a DUB version of T47? Inboard or outboard bearings?

[droo]

T47 internal GXP is what you're after. WheelsMFG make one and the agents have stock.

They're not cheap, but the bearings are replaceable so it's a buy once part.

Pretty sure there will be others on the market, I just like Wheels because of the availability of spares.

[W@nted]

45 minutes ago, droo said:

T47 internal GXP is what you're after. WheelsMFG make one and the agents have stock.

They're not cheap, but the bearings are replaceable so it's a buy once part.

Pretty sure there will be others on the market, I just like Wheels because of the availability of spares.

Thank you. Is there a specific reason for internal bearings as opposed to external? I am currently in NL, so will have a look on the websites. 

 

C bear has this, with external bearings:

C-Bear Ceramic Bearings Bottom Bracket T47 - SRAM/Truvativ GXP - Race - T47-68-22/24 (bike24.nl)

Edited May 28 by W@nted

[droo]

45 minutes ago, W@nted said:

Thank you. Is there a specific reason for internal bearings as opposed to external? I am currently in NL, so will have a look on the websites. 

 

C bear has this, with external bearings:

C-Bear Ceramic Bearings Bottom Bracket T47 - SRAM/Truvativ GXP - Race - T47-68-22/24 (bike24.nl)

Shell width. If you got the external one your spindle would be too short.