It's the 34SC Fender. I have it installed on my 2021 Rhythm 34 right now. Unfortunately it doesn't really protect the stanchions from dirt and mud like other fenders, so if that's your main concern, a zip-tie fender may be better.

Upside is the 34SC fender looks OEM and does a good job keeping my face and downtube from being pegged by pebbles.