I don't have a sled with a studded track but I believe the only reason to run tunnel protectors is to keep the studs from tearing up the coolers in the tunnel. If its a fan you shouldn't need them unless you can compress the suspension far enough to cause damage to the tunnel it self. Look under the sled and see if there are any spots were the track has come in contact with the tunnel (black marks) If not I wouldn't worry about it.
Well tunnel protectors dont protect the coolers, they protect the tunnel. Some of the liquid cooled polaris sleds have heat exchangers that act as tunnel protectors. But yes, you should install them on the supersport. Reason being is that at speed the track will "grow" in length due to the stresses of acceleration and centrifical force. When the track grows, the newly found slack moves up into the tunnel and could potentially be enough to allow the studs to start digging into the tunnel. Besides, those are cheap insurance, i believe they only cost around $25 for the pair right from the polaris dealer.
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