Attributes . A lighter classic Challenger derivative, with redesigned outside lugs, general replacement for stock Skidoo MY17-21. Based on the classic Challenger model with an adapted 16" width and a 3.5in. pitch.. Get a great combination of agility and traction for deep snow riding that seems effortless thanks to a redesigned 2.5in. lug that lightens the track.. Dimensions: 16in. x 154in.. Drive Pitch: 3.5in.. Lug Height: 2.50in.. Weight: 49lb.. Features . Values