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External BBs don't have the spindle requirements like BBs of old.
Look for BSA SRAM DUB BB (incidentally, thats what the Prime hub posted above I am trying to figure out the BB tool required) they will be 68/73, with associated spacers.
The cranks will have the spindle attached already, and you want a narrow wide chain ring to keep the thing aligned.
Watch out for boost spaced rear wheels, they need an offset chain ring for the wider rear.
Need some help fitting a Sram GX dub crank to a voodoo. Voodoo has a FSA BB-7420 73x113mm shell. Bike is going to 1x 12 speed. Can someone recommend what bottom bracket I should be fitting here to achieve a good chain line?
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