I have SKS ATB fenders (from nashbar) on my suspension fork bike (Trek 4300), but I had to do some fabrication to make it work. The rear fenders were easy, there were eyelets and even a threaded hole down by where the kickstand would mount that worked perfectly for mounting the rear fender.

The front fender was a different story. One side was easy because I could bolt the strut to the disc brake mounting points (which I dont use). The other side I had to fabricate a mount because there is no eyelets or mounts. Here is what i did.

I had an extra piece of stainless steel lying around (pretty thin sheet, but think enough to be pretty ridgid once bent- you can buy it at Lowes or Home Depot) I cut a strip about 2-3 inches wide and about 6-8 inches long (i didnt measure this is just a guess) The wider it is the more stable it will be, and the length is arbitrary because you will cut of the excess later.

I bent the piece around the shock tube and bent the 2 ends so they were flush up against each other. If you were to take the piece off the shock tube it would be in the shape of a p, d, or b (depending on its orientation) I put a piece of cut up inner tube under the metal so to not scratch up the shock tube, but it is not necessary.

Then I drilled a hole in the two ends- I tried to line it up with the mounting point on the other side on the disc brake mount. You need to keep the hole close to the shock tube because it will hold the piece tight around the tube and prevent it from slipping. But you it needs to be far enough away that you have clearance to get the mounting bolts and screws on for attaching the strut. If it is not as stable as you want you can drill a couple of more holes in it and put pop rivets or bolts in it to sure it up. If it too loose and is slipping down too easily, try tightening up the bend around the tube or stuff an inner tube under it (if you havent already)

Trim off the excess length on the end of metal so you only have alittle around the hole(s) you just made.

Attach the strut.

For the top mount, SKS included a mount that slides over the fender and allows you to attach it to a point above the fender. I think it is for the rear fender but I didnt need it because I just zipp tied the top of my rear fender to my trunk rack The mount worked perfectly for the front fender when used in conjunction with the mount already on the top of the front fender. I slid the mount onto the front fender so that it was next to the front fenders mount. it was about 1 1/2 inches apart and slide right over the U in the suspension fork. I had to supply my own long screw, because it didnt come with a long enough one. I also wrapped the U with an old inner tube so to not scratch it up too bad.

I did have to trim some length off the ends of the front struts because of contact with my toes, but after that I have had no problems.

I realized about halfway through this, that a picture is worth a thousand words. So I will try to post a picture of the mounts this weekend some time. Hope that helps

Josh