Replacing wheel ebike to non-ebike

Hi i have a folding ebike and it has tiny 14" wheels that need new wheels anyway. How hard is it for me to get a wide hub ? The bike mechanic said 122-126mm for the rear...where the motor is or will not be once i take the wheel off. Its is a single speed bike. I spotted these wheels
https://www.ebay.com.au/itm/14-inch-...53.m1438.l2649 on ebay and havent got an answer back yet about the spacing. Its a bike that i got for free and i will use where the terrain is flat. There are other things i will repair/replace or fix on this too
Last edited by rapattack; 10-07-18 at 07:16 AM.
Reason: more info