Maxxis Maxxcross Desert Intermediate Terrain Tire

If you are talking about the Tubliss system, then yes it works fine for that system. Tubliss just needs a good bead which almost any tire will work for. If you are referring to some other type of Tubeless system I don't know! Hope that helps!

2500/3000 miles depending how much you use your front break. It’s an awesome tire and very much underrated based on real performance.

This tire is not DOT rated.

I use Bridgestone ultra heavy duty tube. Never get flats

I know it worked on a 2010 and 2006 YZF . Not sure if the swing arms are the same?

I rode the Las Vegas-Nelson-Searchlight areas for a few years , washes, rocky hard pack and sharp rocks and the desert IT REAR is a great all around tire. It’s very strong, had great traction and wears well.
As far as the front, I have never tried one.

Stock specs for your bike are 120-80-19, I have not had a kx but I have used the Maxis 120-90-19 on a 16 yz450f and a 15 ktm 350 sxf with no issue. There is not a huge difference between the two but the 90 is a little wider.

Not sure about New England, but it is the best I've found for Central Texas rocks and roots. Very good wear, great traction in wet or dry conditions. I moved from great dirt in Louisiana to Centex 3 years ago and have been running this tire for 2 years now. I do fast flowy stuff and gnarly Graham Jarvis stuff.

Depends on your style of riding. I have an 05 CR 250 that I prefer to run the 110 width because I can spin it up faster. Loose dirt, desert racing and mountain riding.

I believe the stock rear tire on the Honda CRF300 is a 120, so the 110 Maxxis should fit. I use it on my KTM 300. The Maxxis Desert IT is not DOT approved.