T'boo Ted wrote:
all I could think was that looks looks like a track for full rigid and semi slicks...
You are kidding, right? it's probably not as smooth as it looks on that video (the scenery was zipping by at a fair old rate

) and a full rigid bike would be left in the dust to be honest.
I went to Rostrevor last year, it's in the Mourne mountains, everywhere is called Slieve this & that (ie Slieve Martin), we had a good day of biking, including one descent where the discs and pads were quite literally smoking by the end!
I did see a couple of vans doing uplifts though, but I think that track must be fairly new, i didn't see it last time I was there.