Stans NoTubes Grail, Chris King R45 Center Lock
The Grail is the "King of One Thing" - cross tubeless. Tire fit is a bit tight, but you want it to be. Weight is 465g/rim, 24mm wide external/20mm wide internal, 25mm deep. It's also a lovely rim for gravel and some road disc use, but tire selection is important. We can guide you through that.
Chris King hubs are simply the gold standard. Made in the US from the highest quality materials, machined and assembled with unmatched precision, and backed by a 5 year warranty. King's made-in-house bearings are unmatched for precision and durability. Available in a slew of colors (and sometimes in special edition colors), with a unique high precision, low drag, and fast engaging transmission, they're expensive but they're awesome. Available for QR and 12mm TA front, and QR and 12x142 rear. 415g/set