I have a 2013 Ninja 1000 non-ABS. I am the second owner and purchased it with 1200 miles on it from the original owner. I currently have about 1600 miles. I noticed from the get-go a jingling or rattling noise coming from the rear when I am am riding. It sounds like it's coming from the rear sprocket area. The chain may have a bit too much slack, I don't know. The chain does not Appear to be locked up and the rear sprocket appears to not have any uneven wear. It is not speed related or throttle related. I turned off my bike while still moving and it still happens. It happens In all gears but is more noticeable at lower speeds. I just got it on a lift and cleaned and lubed the chain and it's still there. Any feedback is appreciated.