k3 vs k4

whats the difference?
and is there a k5 and whats the difference
apart from the colours black frame and s on the tank any other differences??

Small bend in the subframe on the K4, footrest hangers are a slightly different shape, rear exhaust header is a bit different and the final link pipe is a different shape.
Oh, and the K4 is ever so slightly more powerful than the K3.

That's all I can think of. I haven't looked into all the differences for the K5 yet, though.

nothing really noticable all id say is the footpegs on the k3 could do with being lower so thry have done the right thing there.
looking forward to getting my bike back now,hopefully my confidence will still be there