Not sure what the reason for replacing them is, but if it's drift I read about a fix for the joycons where you can replace them with hall effect version which will never drift. Possibly these:
https://store.ifixit.co.uk/products/nintendo-switch-joy-con-switch-lite-gulikit-hall-effect-joystick
I've got it on my list of things to get round to but not tried it yet.
I’ve gone down that route and can say it’s worth it.
@christianSpaceman started
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Not sure what the reason for replacing them is, but if it's drift I read about a fix for the joycons where you can replace them with hall effect version which will never drift. Possibly these:
https://store.ifixit.co.uk/products/nintendo-switch-joy-con-switch-lite-gulikit-hall-effect-joystick
I've got it on my list of things to get round to but not tried it yet.