Has anyone heard of these? https://savagesnowbikes.com/sv-snowbike.html I'm interested in converting my 16 350 XCF, but when I spoke to a Timbersled rep, he said they do much, much better in deep snow than they do in shallow snow and packed trails. When I found this article: http://snoriderswest.com/article/gearboxx/2017_year_of_the_snow_bikes The reference to lower elevation conditions caught my eye. You don't need to remove the swingarm to install the track. It's very narrow and fits where the rear wheel goes, and uses the existing brake caliper. Looks pretty neat, and is a lightweight setup.