Need a Non fat spider chainring for a BAFANG ULTRA MAGNESIUM MOtor

[Yonkk]

I need a non fat spider chainring for a
BAFANG ULTRA MAGNESIUM MOTOR. I have a 12 x 142 rear. I can see how the regular chainring would be perfect for a 4 inch fat tire. Not perfect for a 12 x 142 rear ANY OPTIONS not seen any.

 

[Ford Prefect]

I need a non fat spider chainring for a
BAFANG ULTRA MAGNESIUM MOTOR. I have a 12 x 142 rear. I can see how the regular chainring would be perfect for a 4 inch fat tire. Not perfect for a 12 x 142 rear ANY OPTIONS not seen any.

Sorry to Necro this old post:
Did you find the chainring you needed?
I was just looking at this one:
Bafang Ultra G510 /M620 chainring/chainwheel for MTB or Fatbike-Greenbikekit.com online store for e-bike battery, Bafang motor parts, e-bike kit-GreenBikeKit.com
(Except I'll want to find a 12 speed, 11-to-46 (or 48, 50, or 51) tooth cassette, to go with it!)