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I currently own a 13 S-Works Tarmac. I have a Red Crankset. It has the Ceramic Speed Bearings in the OSBB. I would like to install a Dura Ace 9000 crankset. What, if anything do I need to make this install happen?

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You have (at least) two options... Wheels Manufacturing makes delrin adapters that install into your ceramic bearings. They also make a conversion kit that uses its own bearing system, replacing the OE parts.

As noted above, Praxis has its own conversion kit.

Wheels Manufacturing adapters:
Wheels Manufacturing Bottom Bracket Adapters

Conversion kits:
Wheels Manufacturing Bottom Bracket Adapters

NOTE: According to Specialized Frame guide, you have a carbon BB (68X46mm press-fit), but check before ordering.

http://service.specialized.com/collateral/ownersguide/new/assets/pdf/CC0280_2013_RevB.pdf
 
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