If you place the stock link on is side on a table, then put the Herrmann link on its side on top of it, how does the shock hole compare between the two? If it is close to the same, then it is probably a MX link. If the shock hole in the Herrmann link is lower, then it is probably a XC link. Usually, a XC link will hang lower, since it will allow a longer shock length to be used to allow more uptravel due to the larger tire size.
Thats about the only way I can think of, unless someone has a Herrmann link laying around that they now what is is and can give exact measurements.
Doug
