I blew a front shock and decided to upgrade so ....
I now have a set of Bandit front replacement springs for sale. If you are running stock shocks and springs, these will be a big improvement. They are about 18 months old and have about 700 miles on them and look and ride like new. $50 + shipping.
I also have one good OEM shock. This is original to the 2017 Z and has about 2000 miles on it. It appears to be in good shape and tests fine. $50 + shipping.
I put 2018 and earlier because I don't know if they changed the shocks when they changed the springs in 2019 or 20, but they likely still fit.
If you have one bad shock, here is an opportunity to upgrade on the cheap! Or perhaps you just want a spare ;-)
Send a message or post here if interested.