Bottom bracket for groupset upgrade

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gmw492

Veteran
Hi, can anyone help me out , I’m thinking of upgrading my Specialized Tarmac sl4 road bike with R7000 105.It has Sora groupset on it with a OS sealed bearing bottom bracket , I’ve looked into what one I could use to replace but it’s a bit confusing as the OS has a shell 61mm wide and groupset r7000 is 68mm think , any advice thanks , here’s a link to my bike specs , any Bottom bracket suitable, thanks
https://www.thebikelist.co.uk/specialized/tarmac-sl4-2014
And a link to BB information I read
https://wheelsmfg.com/bb-standards
Also information
https://www.kogel.cc/blogs/kbba/specialized-osbb-explained
 
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DCLane

Found in the Yorkshire hills ...
It's a BB30 press-fit bottom bracket. Any of those will fit or you can get an adaptor to use a BSA threaded one, which would be my recommendation.

If you want to stay with a BB30 bottom bracket my son's two bikes with them run a Ceramic Speed one and a Hope one. Both have been excellent.
 
OP
OP
gmw492

gmw492

Veteran
It's a BB30 press-fit bottom bracket. Any of those will fit or you can get an adaptor to use a BSA threaded one, which would be my recommendation.

If you want to stay with a BB30 bottom bracket my son's two bikes with them run a Ceramic Speed one and a Hope one. Both have been excellent.
Great thanks for information
Just looked into it , and token do a threaded press fit BB , I’ll look at the others too 👍🏼
 
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