Light Wheels (Bicycle)
Mavic Cross Max SL
A Mavic Crossmax SL 24 hole front rim weighs 405 grams. It's tubeless which is nice, but it is limited to use with the fancy aluminum spokes and integrated nipples.
Mavic 819 Rims
The rim with 32 holes and nipples will weigh 518.5 grams.
Mavic EN 321 Rims
32 hole: Book weight, 570 grams. Actual 566 grams.
650B Blunt Rim. 32 hole. 464.8g.