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?
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.
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