scorpion racing out of Chilliwack, BC (Canada) makes a really burly aluminum one that fit perfectly on my '11 310. Painless installation, solidly mounted, great protection. It bypasses the stock mount points entirely and just uses a couple of solid mounting brackets that were really easy to position. Can't recall exactly what I paid but the prices are on their website. Way less than what's quoted above, for sure. I got their rad frame, rad guard and skid plate, all in for about CAD$320. Rad frame is really burly, too, wish I'd picked it up before I hit the rad a few times -- made it really hard to line up the holes, since the frame was straight but the rad wasn't. But it's all buttoned up solid now!
KF
KF
Played in my little trails last Sunday- I can ride, wrist is recovering!