IT is a freehub, it hasn't got an freewheel If it is the hub skiping you can hange the freehub body (the bit where the sprocket goes on) see if that works. They shouldn't be eqpensive 5-10 quid or something around that.
Erm lots . no seriously i would not recomend using one for trials. If i could afford something better i would get it. In ways its like a shimano hub :$ Not sure on that one. it had been sprayed befor i had bought it. sorry
The rear hub sadly is a xc. not the best in the world but i picked it up pretty cheap hopefully will upgrade it soon. I do agree with the colour clash to . black hub would be better. Cheers dude