On the surface, the real news appears to be the 2.75” by 3.5” pitch track, however, when riding these sleds, the belt drive 3” lug by 3” pitch track combination is just as significant a change. Until now, the 3” lug track has been too one-dimensional for our riding style (only performing exceptionally well in bottomless powder snow). After riding them, it was very evident that the 3” lug track works much better when combined with the belt drive than before. The difference was significant enough that we wondered if they had made some changes to the track itself. We were in deep powder and the sled would lift right onto the snow. The response was quicker making the sled more agile and playful than before. We attribute this mostly to the belt drive; however, this was on a 163” Khaos with the Walker Evans Velocity shocks and we know the Khaos platform helps with agility as well. On the mountain trails, this sled felt a bit slower in acceleration than the 2.6” lug track we are so familiar with and top speed is definitely harder to attain (Polaris recommends not running this track over 60 mph for maximum durability). We attribute this to the heavier weight and larger lug of the 3” track. We would position this track as the deep snow “go to” track. If your riding consists of mostly deep, light, fluffy snow, without a lot of trail miles to get to it, this is definitely the track for you. This track provides the most lift in deep powder snow conditions of all the tracks offered by Polaris. And now without the weight penalty of the chaincase this track combination has become a real weapon.