That 440 has a 14" wide track. I don't think the skinny track can accomobdate idlers positioned outboard of the rails. (Same with the 13.5" track on the firecat.) Those idlers that you think are missing might be relocated between the rails. Can't tell from the pics I've seen. If they are gone altogether, it's because weight savings is more of a concern than short hyfax life on the race sled.
it depends on snow conditions with racing a lot of people remove wheels in good snow lube conditions no wheels is faster the track is evenly distrubuted on the hyfax doesn't have to bend over a wheel and hit back on the track i'm sure you all have noticed extra wear on your hyfax in front and behind your wheels but with minamal snow your hyfax will over heat causing you to go slower with all that siad how much faster with no wheels mybe a 1/2 mph and a little waight savings you choose!!
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