FSA's "Pig" and "Pig DH" headsets are advertised for rugged mtb use and, base on their weight, should certainly be sturdy enough. However, as mentioned above, you need to determine the type and size of the headset before buying anything. At this point a trip to your (or your friend's) LBS is definitely called for to be certain what will fit. As FBinNY stated, the model you originally linked to is absolutely the wrong one.