FYI - Make sure the Hyfax is a tall-enough profile, and watch the rear shock bottom eyelet clearance to the track. I just bought a used M10, and when I removed the rear shock during the skid overhaul, this is what I found. I called FAST and sent pics to them, and they said the damage was from using the wrong Hyfax. Will cost me $45 for the bottom cap, and the cost to replace oil and recharge the shock. About $100 in damage to save a little on hyfax....not a good deal IMHO.
I bought the correct Hyfax from a Polaris dealer. It is really thick, and is for the Edge chassis w/M10. The dealer knew exactly what I needed as soon as I said "M10". Not cheap though, $19.99 / side. You know its correct because the surface of the installed hyfax is level with the rear wheels at the back. I will post a pic showing what I mean a little later tonite.
Ride safe, and keep the rubber side down !!!