Thanks for the replies everyone. Well almost everyone. (read below) I just received an email back from the vendor and it was very helpful. Here the info is...
The speed rating for these tires are:
170/60R17 (GT) - W = 168MPH/270KMH
120/70R18 - W = 168MPH/270KMH
The "Z" in the ZR means the tire is rated for at least 149MPH/240KMH, which is the case for these tires. W exceeds Z in the charts. They are most likely labeled with the ZR rating on the tire themselves and the product description on our site most likely needs to be updated to include this.
If you would like more information, you can read more here:
https://fortnine.ca/en/motorcycle-tire-speed-rating/
Also a funny part to this question I posted this morning, I asked the question and thought... Do I have to state that I don't care about the Bridgestone haters and the flavor of tire that is the only tire to run...aka tire thread? Well appears I should have as it is obvious that some people just can't help themselves. Counselling might be in order but there is not shame in that.