The stock newer ktm 300 flatland guard that fits the stock pipe and fmf pipe also fits Beta 2 stroke enduro pipes. I had one on my 13' 300 before it got stolen and I have one on my 15' 300rr now and it fits well.. just gotta tap a little with the rubber mallet here and there..
I think this is what I got..
http://www.flatlandracing.com/Merchant2 ... ode=11-KTM
here's my bike with one on.
https://www.youtube.com/watch?v=dhWVBQv4CGA