[techhelpbb]

Depending on the forces involved:

In the past I bought some tires from Tractor Supply made a jig to drill out a bolt pattern that I also put into some G&G Manufacturing cast sprockets. I put a piece of PVC around the bolt pattern as a big spacer. A good shot might break that alone but I packed it with Shapelock. In place of PVC one might use EMT as well.

It simply worked and I've seen a few go-karts setup like that as well.
Just keep in mind you need to be careful matching your part selections to make this as easy as possible.
BTW it's heavy so if weight is your concern think it over some more.