We didn't see any crazy bikers there but it could be because of the cold. I'm sure that if you would go there in summer you would definitely meet some other crazy people ;)

BUT it is tough and I can imagine dangerous for bikers.. the road is quite narrow and the curves are sharp so I think you would have to be very carefully not to get hit by a car :) Plus the gain in elevation is almost 1 km over 13 km. I'm sure that you can make it.. just sayin' :D