I don't think you'll be able to find 404s (I'm sorry.. it's a tech joke)

Zipp has been producing the 404 wheelset for a very long time.

404s are only a touch faster than 303s. If you are on rim brakes try to find an older set of the 404 NSWs. Super easy to swap tires and tubes if you're not dead set on tubeless, great brake track, very stable in crosswinds.

I think those replying here saw your 303s as plural rather than the new, lower cost "S" model of the 303. It would have been less confusing if Zipp used something like the 302s for this new wheel.

I don't think you'll see the 404 revised in the short term as they just updated their entire line to tubeless compatibility. If they do bring a new model 404 out later it will likely be the equivalent of the new 303 Firecrest which went to hookless, increased the internal rim width and decreased depth to support the use of wider tubeless tires. The 303 Firecrest did come down in price, but not to the level of the 303s, so a new 404 Firecrest would be priced similarly.

I think we are on two different pages. I didn't mean 303s as in plural 303. Zipp has a line of wheels that are more budget friendly known as 303s:

https://www.sram.com/...odels/wh-303-stld-a1

the 303s looks like a good budget carbon wheelset. Lots of other companies are making carbon sets in the same price point and around the same weight (roval, bontrager, Reynolds, etc.) just saying you have options.

Sadly I don't have a ton of options. My bike is disc brake, but my rear wheel is a quick release and many manufacturers don't make end caps for quick release (Reynolds, ENVE and Zipp all do though).