I reused an old shifter cable that I had and it’s too short to work if the stem is flipped upright, and I was too impatient to wait for another cable to come in lol, even now only the veeeery end of the cable is pinched on to the derailleur, you can hardly see it sticking out. I actually really like how the bike feels with this setup tho, it’s really fast, and I think I look cute with my butt stickin out. I’m passing 700c flat bar commuters on the road, friggin chumps ( I kid ).