A bit of a random question, but one that would really help me out: I have a frame (size M) on order and I slowly but surely getting all the parts together.

For the brakes/shifters I am thinking of getting some GRX ST-RX820 which come in a "J-Kit" version which come with a pre-cut, pre-filled hydraulic brake line - this would be convenient because I don't have the tools for working on brake lines (yet).

Since I am trying to avoid trimming the brake lines, I'd like to make sure to order the right one - so if anyone has any recommendations for brake line length (especially the rear) please share - thanks!

I just built my bike up with SRAM force and you have to cut those to make them fit through the frame. The brake line with the olive didnt fit through the frame for me, I do not know about Shimano. To do it nicely you would always want to cut them to length, I never did until yesterday and it was really easy. Bleeding isn't totally necessary for me but I will soon just to be sure. For SRAM everything was included in the box except for hydraulic brake line cutter which I bought of ali.

I ordered the FM326 with flipchip, Jack just contacted me that there are issues with the fork and are offering the old fork without the flipchip.
This is what was wrong according to Jack: The hub contact the aluminum part only. Did not contact the fork leg. So the fork leg may move during riding under some condition


Edit: apparently they have a fix ready in 25 days