kawasaki ninja 250r

Picked up this bike a month ago I got it to start but not easily it ran for about 20 mins but when I give it gas past 2k rpms it stalls out and it wont go in gear without stalling out. Any suggestions plz?

Looking for a 250R with an blown engine or head, have a new motor too put into one, has to have a title please let me know what you have thanks!!

Hello guys, You might will be able to help me out whats the problem is with my bike and every help will be appreciated. So basically recently I noticed that there si a rattling sound coming from engine bay when I'm taking off and when Im decelerating with engine thats the point when it is...