I watched a factory video that shows a engine cut away. You can get a good look at the clutches. I would have to say that are a cv-tech LP3 for the driven and a Trailbloc for the primary.

You are 1000% right

I don't want to be pushy but I think you should do a review of this model since you have had so time with it. Just wondering how it compares to say a 500 sportsman or the outlander 400. I would say that these are what I would pit against it. Would also be good to know of any short comings it has and if there are work arounds for them. My local dealer has been sold out of them it seems every time they get some in.

Give me a bit, it's busy time here for me.
Not a lot of time to ride.
I'll be back in a couple weeks with a review of both short and long x450 models and the x550

I can definitely understand being busy.  I look forward to reading what you think of them.