*hoping it isn't something silly like an XC717 29*
anyone?
mavic a719 or a317
mavic open pro
all seem to be popular choices
Got open sports on my road bike, thought they'd be a bit narrow for MTB tyres though
I've got MAvic TN 719s. Disc specific, strong. Probably not as light as the other rims mentioned above, but you won't have to worry as much about breaking them!
The TN 719's are the only ones currently available - a 317 and a719 are discontinued. In traditional Mavic fashion though the TN719 is basically the same as the old a719. Quite what they think they'll achieve by changing the name and giving them ostentatious new logos I don't know... They're fine rims but kinda narrow, kinda heavy, and don't work well tubeless...
Cheers. All this is for a theoreticall 29er.