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Another which bottom bracket question...sorry

edited February 2015 in Workshop
I have a carbon 2014 Specialized frame with a 61mm bottom bracket shell. I want to fit the s-works carbon cranks.. on it which have a 68mm spindle. It's a BB30 frame. Can anyone recommend a bottom bracket for me?

Presumably I'll need two 3.5mm spacers and a 68mm BB30 bottom bracket. Will a PF30 bottom bracket work as well?

The rear axle is SCS or Short Chainstay compatible so I need to maintain the chainline. I think the spider on the s-works cranks should be fine but is there anything I've missed or need to know?


  • Monty DogMonty Dog Posts: 20,614
    PF30 won't fit BB30 - check your crank installation instructions or go to a Specialized dealer. Makers are coming up with too many proprietary standards for many to care. Don't worry about your decision as you'll probably be looking for new bearings in 6 months anyway....
    Make mine an Italian, with Campagnolo on the side..
  • OK it looks like I can install a PF30 into my frame if I use these Not sure how many 0.7mm spacers I'll need to maintain the chainline though. The problem being I won't know until I've fitted it!
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