Going to run 1×10 from XT double…but how many spacers will i need on the BB? Will 1x 2mm be enough?

Please note i love riding bikes…but im totally inept building and fixing them!

Cheers

Hi, I have one spacer on mine with an xt double chainset, running a zee short cage mech and it’s all fine.

It depends on the width of the BB shell. 1 spacer for 73mm and three for 68mm. That’s the same as for any chainset and has nothing to do with the number of chainrings. Start off with the spacer/two of the spacers on the drive side – if there’s issues with the chainline you can switch it/one of them over to NDS. Good luck.