When it comes to 14g and 13g spokes, especially short ones for e-bikes, we've got you covered. We stock uncut spokes from Sapim and DT Swiss, then cut them precisely to length on our Morizumi spoke cutting & threading machine when needed. All spokes are shipped with Spoke Fix compound applied to the threads, and with a corresponding spoke nipple.
When completing your own wheel build, especially for an e-bike hub motor, we recommend utilizing the Spoke Calculator software from Grin Tech (if on a mobile device, switch to desktop mode in order to see the page better). We use this calculator in our shop with excellent results.