bob burns did some of the monitary workups on facebook ahrma roadracing he seems to have a good idea of what the different types gave ahrma in money.
I'm more curious about the outlay than the income. The way things are set up I can't see the MX being a large amount of effort or cash going to it since AHRMA doesn't directly run the races.
there was a financial summary in the recent magazine, it showed income from RR around 800k maybe, and expenses around 750k, for off road it was about 70k and 50k those numbers aren't exact but they are of that order so yes rr provides most of the income but is also most of the expense, dont remember the finer details, when I saw that I stopped digging, am I missing something big? either way it meant that losing off road would make no difference cost wise to RR, the biggest issue for me would be the rule making.