THE LUGS ARE NOT ONLY DESIGNED FOR TOUGH CONDITIONS BUT WERE CREATED TO BE VERY LIGHT IN ORDER TO CREATE A WELL-BALANCED, HIGH-TRACTION WIDE TRACKFEATURES The weight is reduced up to 12% while rolling resistance has been reduced up to 10%. These new technologies that allow lower fuel consumption and make riding more comfortable. WT30 is a perfect match for tough work as well as recreational riding. Please NoteNot all tracks can be installed on all sleds without modification. The listings in the application chart fit OEM suspension, track width, length, and drive pitch only. To determine if an optional track is compatible with a particular snowmobile, you must check the bulkhead, tunnel, heat exchanger, and suspension wheel positioning for proper clearance.