A couple of guys found tracks off of ATV track kits ... would work but likely will require custom drivers / mod the drivers to work .... but I'm not sure which ATV tracks would work.
You can order a track from TracksUSA and have it cut down to 12.5" wide ... just make sure that the series track has the windows far enough in from the side so that there is still an 1" or more outside of the outer edge of the window.
The AD Boivin track was from one of their Explorer bike kits ... its a decent quality and hooks up pretty good ... good luck with the mod ...
You can order a track from TracksUSA and have it cut down to 12.5" wide ... just make sure that the series track has the windows far enough in from the side so that there is still an 1" or more outside of the outer edge of the window.
The AD Boivin track was from one of their Explorer bike kits ... its a decent quality and hooks up pretty good ... good luck with the mod ...