kader01, I've got a 2014 Sprada 1. I'm 192cm and on a large, fits well. The medium should be perfect. But I've got a hunch what the problem is. The stem is a bit long most likely, but the standard silverback handlebars suck, they have this stupid double kink thing, swap these out with some better ones, also look at dropping the bars down a bit. As for the dropper, remember you size it on how much seatpost is exposed, if its let's say 110mm then a 100mm drop will be fine and the rest of the post should fit in the seattube nicely.