ended up buying one of these bikes few months ago and forgot to post what I think but the 2017 is a sweet machine, atleast so far. the balancer is just one of many things that were changed on the new model. all new redesigned crankcases. crankshaft is positioned nearly 20mm higher and one of the trans shafts is higher if I recall also. no the buzzing isnt gone completely but theres certainly a lot less of it. the whole chassis from the previous year was pretty much scrapped and they started over. airforks are now standard equipment which are 3.5lbs lighter than previous upside down sprung forks. cooling system is one of the updated areas that I noticed right away. the plastic louvers in front of the rads that typically fit loose and function really only as rock shielding, are now tight fiting and actually serve a good purpose, forcing the air to go through the fins rather than spill out the sides. cooling passages in the head are supposedly redesigned but its hard to say whats different without slicing the head open. rads are a new generous sized single row design. protaper bars are standard along with footpegs and gear shifter getting all new designs to keep mud and debris from accumulating. im sure the rear suspension linkage geometry is likely something new since the overall seat height is alittle lower than last year but I haven't dug into the specifics on that. a lot of other little stuff like a super grip seat and high end D.I.D wheels. front sprocket is now held in place with a bolt and large washer into the trans shaft like Hondas, rather than a circlip like in years past. 38mm mikuni now instead of keihin. to find out more you can check out the ktm or Husqvarna websites
http://www.husqvarna-motorcycles.com/us/motocross/two-stroke/tc-250-1/. might be spring before I can do anymore riding as the weather went to shit for this year
