The Suntour CR18 is a rim, not a hub so depends on what the hub your are running.
I don't know 100% for sure but I'd wager that the Soma is a standard english BB shell though the omniums sometimes hit the chainstays of certain bikes.
Last edited by Huffandstuff; 07-23-14 at 10:34 PM.
Reason: Don't use a spacer, bro.