Better rolling resistance, better attack angle, main difference is in the tight trees the sled doesn't trench as bad. The track pulls the sled forward when in a sketchy area instead of blowing out like a stock setup. So say you have a single trail through the trees in a sketchy spot and don't want to ruin the track for the people behind you the 8 tooth drivers don't seem to blow the trail out when trying to creep. Do loose a little tunnel/bulkhead clearance but no more than the 3" equipped sleds with 7 tooth drivers. You can feel the sled roll easier on downhills and deceleration where a stock one is almost like applying the brakes. Hope this helps.
