Hello, I recently purchased a 2014 Specialized CruX Elite. It has carbon frame. When thinking about an extra wheelset it occurred to me that my 29er wheelset may fit but I don't know much about that kind of thing. The wheelset in question are Mavic C29ssmax 29ers. The specs say it has 9x130 rear axle. Will these things fit in my CruX?
Measure the rear dropout spacing on your new Crux to confirm. It should be 135mm, so your older 130mm hub will not fit properly unless you can source axle adaptors (removable end caps). Newer mountain/cross/gravel wheelsets are 135 or 142mm wide in the rear, and some offer adaptors to change width and axle type (QR or thru-axle). (There is also the issue of whether a hub will accept 10 and 11 speed cassettes.)
Is the spec you quoted for Crux or wheelset? measure that rear hub too never heard of 130mm rear mtb hub old std is 135x10mm In fact just drop it into your frame and check if there is in fact too much slop
