Yeah, I get why longer lines would be needed, especially with adjustable rearsets that move the MC back and aft. And the service manual acutally says to remove the swingarm. I don't know of anyone who has actually done that though. Presumably that is to gain access to the clamps running the line along the swingarm pivot. There has to be a way to do it without full removal of the arm. That would be very tedious.On ABS models, with some rearsets the rear master cylinder can't stay in the same position as stock, so it will require a longer rear line (the one that goes to the abs module) to make it possible to fit. As for the manual, it requires the disassembly of the swing arm to remove that hose, but I don't know if there's some sort of a trick to do this without remove it. The best solution for me is opt for a rearsets kit that doesn't require the reposition of the master cylinder.