Can I run a 2018/2019 Zipp NSW tubeless 858? It doesn’t say one way or another on the website? The new 2021 rims say specifically tubeless, but I have 2018 303 NSW and have been running them tubeless for a couple years. A search of the Zipp website is pretty fruitless, as I think they really want everyone to buy some new wheels 
Can I run a 2018/2019 Zipp NSW tubeless 858? It doesn’t say one way or another on the website? The new 2021 rims say specifically tubeless, but I have 2018 303 NSW and have been running them tubeless for a couple years. A search of the Zipp website is pretty fruitless, as I think they really want everyone to buy some new wheels
They are NOT tubeless and the old page (obviously not up anymore) stated they were clincher only and not TL compatible. Bummer.