Nothing major has gone wrong with my ZZR, but I have ridden it hard, on some long runs and to work most days.
Now the engine seems to be a bit noisy and she has lost a little power. I would love to know what the noise is about.
She has pretty good acceleration.
She has awesome handling and is very light to be flicked around.
She is a comfy ride.
Has a good all-round look.
With regards to the noise, is it a loud rattling noise, mainly noticeable at tick over? If it is, then it is the timing chain. Easy remedy is achieved by resetting the tensioner and then releasing it. If this is of no success, then a new timing chain would need to be sought.