Need some new wheels, and some advice.

[Seca Blue]

Yeah the M231 is around 420g, the 261 (26mm wide) 460g and the 281 (28mm wide) 550g. So it depends on what rim the Gao rim is, Mavic did not specify these. It could also be that they are re- labeled earlier rims, Mavic used the M5-7 moniker.View attachment 743057

That's interesting, thanks for posting. Seems like they are in a good place weight wise, strong enough to last, light enough to help.