Join Date: Sep 2009
Location: Denver CO
Bikes: giant tcr advanced sl, trek pilot 5.2
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Replacing a BB . . . spindle diameter question
I am replacing a 2009 Sram Force regular with a similar compact double, 50/34. I bought a Sram Force compact double with a GXP bottom bracket for a good price. I know the GXP won't work with the BB30 in my 2009 Giant tcr advanced sl but will the spindle on my new crank adapt to BB30? More specifically, is the spindle on my new crank 24mm while the spindle I'm replacing a 30mm? I also read there is an adapter that will adapt the 24mm crank to fit the BB30. I need some help. Any thoughts? Much appreciated.