Hello vintage friends,
I‘m currently trying to replace a 7-speed Shimano 105 HG/UG freehub body on my Motobecane Jubilee Sport (1982), but the new NOS Freehub simply won‘t fit on the rear hub, although the inner spline pattern looks the same. I can‘t post pictures at the moment, since I’m a new member, but here is some info: both freehubs have the same dimensions and look almost the same. On the bottom side the new FH has some additional rubber rings which are missing on the oder one. BUT, the hub socket looks the same.

Does anybody know what I‘m missing here? Are there some different hub socket standards one should know about?

Cheers,
Wheely