it’s my poor wording.
Basically, if you look at the pictures I posted of the hugger you’ll see what looks like a half square shape cut out where the hugger meets the back of the bike.
If I remember correctly, this cutout allows space for the swingarm pivot (I may be wrong, it’s difficult to picture it without the bike to reference from) but that hole has been closed up on the 2017-19 models to help protect it from road spray in bad weather.
The actual hugger itself hasn’t changed size or shape and should still fit, you’ll just be missing that small upgrade to the hugger.
I hope that helps but I’d like it if an SX guru could help here
Just to highlight where I’m going wrong with this explanation, thanks!