the front shocks from a polaris predator 450 (fox podium x piggybacks) are a direct bolt on upgrade for the 660 all you need to do is put a couple washers on the top when you mount em b/c the top bushing is about 1/4" narrower than the upper mount on the 660, imo the easiest and best upgrade to the raptor suspension you can do, better than yfz shocks!!!! and about the same price....they can be found on ebay for 200 - 300 bux. ok just found out from fox that the reason mine are dual rate and valved and such are that they are from a $8k 70 cc race quad called a cobra, so accordind to fox the polaris fronts are the same except for the dual rate springs so you could use either, the polaris ones are similar in length to the yfz shocks (about 1" longer than the 660 shocks) but the cobras are better!!!
NOTE: mine have been converted to dual rate springs and revalved but in polaris single rate form they're pretty sweet too, and way better looking than yfz shocks
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