The powertap is used – 20 hole. Well maintained and really with few miles on it. Rim is brand new 38mm clincher. Previous owner blew out the rim and I held on to it and a rim to swap. Helluva steal. The limiting factor is that it is a 20 hole rear so the rider weight should be low. It is also carbon though so that adds some strength to it. Ask me if you aren’t sure whether this would work for you.
Powertap hub is a G2 SL+ . This is currently set up as a 10 speed hub but can be run as 11 if a replacement freehub is purchased.