I have 2000 miles on tracks with my 400HO and it performs great. Problem is that no one makes a kit for them. I bought a kit that is for a 500 sportsman and modified the installation brackets. That cost me $ 119.00 Unbelievable performer in 8 ft. of snow.
Some will tell you that you need lots of power to run the tracks and thats B.S. 400HO is light & has the power.