Camso Challenger X3 Mountain Tracks - 15in. x 156in. 9309MFull 3in. tall lugs provide unmatched traction for boondocking in the most extreme bottomless powder Lug geometry and support columns allow lug cup and flex action for unmatched floatation Single ply construction, 3in. drive pitch and advanced molding technology make it the lightest in its category NOTE: Not all tracks can be installed on all sleds without modification. To determine if an optional track is compatible with a particular snowmobile, you