Is the inside circumference of the track and is calculated as the drive pitch multiplied by the number of track segments. It must be correct to the nearest inch for proper fit without additional modifications to the skid frame.
Is the measurement across the track and is governed by the width of the tunnel.
A slightly narrower track is permissible, like a 15" track in place of a 16" track, but not necessarily the other way around.
Is the drive cog center distance around the circumference of the cogs in the drive axle. It must match the existing track or the drive cogs must be changed.
2.52" primarily machines manufactured before 2007
2.86" primarily on recent models manufactured after 2007
3" and new 3.5" drive pitch for lowest weight on select mountain sleds
Is the distance the lugs extend above the track suface.