Again, was a longgg time ago. Let it go back to the grave please.As far as i read in the upcoming nsw/act 4x / dual slalom thingo... (its late, my brain's not working excuse me.)
The rule's said must have front and back brakes.
And then also at least 2 of the following:
1. 26"-29"
2. Front suspension
3. Gears
But it would make your life much harder on a 24... you should go 26