Thread: Octalink, MegaExo and new Compact Crank
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Old 03-09-11, 06:06 PM
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CACycling
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Originally Posted by ianstock
Thanks, but I need a bit more education.

Is R600 an earlier Shimano compact crank? If it is Shimano, why won;t it fit on the existing OctaLink?

Why would I need to change the cups? Isn't the splining on the center shaft? Not sure why a cup change would help.

Ian
The R 600/700 are Hollowtech II cranksets that use the external bearing BBs. The suggestion is to pick up one of these (pretty cheap on eBay) and replace your BB with the external bearing type.
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