Yes. You'll need the shifter,the appropriate cable for your handlebar,a Q100016 cable anchorage,and a Q100012 pulley assembly. A 2020 bike will have the shifter mounts on the brake lever,so you just need to remove the shifter from the new lever and bolt it into your old one so you won't have to play with the brake cable. When mounting the shifter,just snug the bolts. If you make them too tight the shifter won't work properly. You can use the 2spd cogs,but the gears won't be evenly spaced and the 12t cog will cause the chain to rub on the frame.