I'm looking for a new bicycle to replace my stolen gravel bike, and one of the options I have is a 12,6kg full CrMo steel framed gravel / trekking bike that seems cheap and robust enough. My only concern is that my previous bike was 9-10 kilos, with an aluminium body and carbon fork, and it rode really well, so i'm a bit worried it might not be as fun on longer rides.

So that got me thinking: how much weight could I reduce by switching from a steel fork to a carbon fork, and how easy is it to do it myself? Would it be worth it?