Old 03-20-17, 10:50 AM
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Originally Posted by fietsbob View Post
Crankset choice is an important Factor in the BB spindle length..

Unless you get one of the latest tube spindle, external bearing BB, Which you Show..

Then the BB spindle is part of the Right Crank arm.. And no Choice needed, or available..

You have to buy a new Crankset of that kind, you show an OLd Square taper Crank ..

the 2 pieces you show are incompatible.. What do you want to Keep..?

The Crank? then the UN BB is the Type... Right length ? I on the faceless internet, Have no Clue, go to a Bike Shop that has many lerngths to test fit.
What bob said. Hollowtech BBs and cranksets don't have an adjustable "spindle length" They're one length. Just make sure you buy the right BB that'll fit your shell (68 mm vs 70 mm) and the hollowtech crankset should fit. (I make no guarantees.)

With that said, I don't often work with hollowtech II BBs or cranksets, so I could be wrong. Best to do your own research.
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