Looks pretty damn steep to me. I may try it, but I'm not going to be 1st. If others can do it on similar bikes, I would definitely give it a shot. JUST DON'T STOP!!!! Going down it shouldn't be a problem. There is a long, steep hill where I normally ride that we try, usually after some liquid courage :chug: . You can't go straight up it b/c of trees and holes. It's a little scary on a side-slope with the uphill front tire in the air. We've only had 1 person get hurt, but he went the wrong way and rolled straight over backwards. The quad landed on his chest before rolling several times down the hill. He was lucky it was just a sport quad and that he only broke his wrist. He did need surgery to fix it, though.
The last poker run we were on had a steep hill though (not sure how it compares), it is nicknamed "Suicide Hill", and although I was a little nervous, I drove my bike up and the bike my wife was driving up the hill (she wasn't comfortable with it), it wasn't as bad as it looked (from the bottom) after going up it.
I'd give it a try with a good set of back tires. It looks to be somewhat hard so traction should be there to get you up and over. IMO the hardest spot would be right above where the rider is parked, almost looks vertical other then that its not high even to run out of power. 3rd gear pinned should do it :thumbsup: