problems in terms of what? the only real issues i've had are the ball bearings going in the shitty pedals and the back break wire detaching itself from time to time lol

its a sweet bike...but yeah...your gunna break parts on any stock bike...if your gunna buy the subrosa than make sure to get a sealed bottom bracket....my crank set didnt have one and it got screwed up super fast....and i bent my bars...so maybe get new bars too

http://www.pinkbike.com/photo/2194202/

glofhorny

http://www.pinkbike.com/video/10585/