It will fit but doesn't compare to the 2.6 track. The 2.6 is lighter and gets great traction in powder and set up snow, its just a better all around track.
i agree that the performance of the 2.6 track is better. I'm not happy tho with the way mine is holding up and wearing hyfax's. the pro track is just a back up plan when mine shells out.
I got cheap series 5 track and installed it to my axys.. i like it more than series 6. Doesn't hook up so much and stays on top of the snow a lot better ?