Yokomo YR-4 rear belt size vs other Yokomo cars belts

[V12]

I got a YR-4 touring car which have the rear belt quite worn. Also you can´t read the type of belt anymore which usually is printed to the top of the belt.
Tried to search for informations but can´t find anything.

So someone have a new belt to look at or know the dimensions?
Original belts were made by Bando, but I think other manufacturers might have same dimensions.

As the rear gear box, motor mount and diff is the same type as found at some of the Yokomo offroad cars, I wonder if certain other Yokomo cars use also the same rear belt.
The YZ-870 could be same, also Works 91 or 93 maybe.

[V12]

OK just found the info at some other thread.
Seems to be a S3M 192mm 64 tooth.
Wide I measured around 5mm.

The question is now, which company make replacement belt like this.
I found Bando still offers that diemension but 6mm wide.
So the 5mm thing was special order from Yokomo?