It is replaceable and easy to do your self. I changed mine out a little while back, didn't take long at all. I fed the new one through as I was pulling the old one out to make sure I didn't mess/mix anything up. No Dramas at all. Ask your local Kite shop for the part, I think mine came with a new piece of black elastic that wraps around your quick release as well

I was out just then down Mordy way.... Was going prob 400-500m in and out on the way in the f*cking thing snapped!!!!! Is this a common problem with the slingshot kites????????

Most signs of any wear are the signal for that bit to be replaced ASAP - In flying we replace bits because they have reached their 'time' in hours - often with no signs of wear or fatigue !

A mainline that is showing the likes of your picture is a ticking time bomb - as NVS said not expensive to replace and not hard to do - so whats the excuse for a long swim or a serious sea rescue?? - Just dont risk it - replace any suspect items especially main power straps or flying lines!! just my 2cw!

just got thezu to fix my lines up for us... $30 for a new chicken loop rope. not too bad.. was expecting it to be quite a bit