I try to be unbiased and truthful. The O E bighorns on Po's that I have checked are the real thing. I don't know how to sugarcoat that. That is not the case with some of the Yamaha's and Can Am's, and I don't know for sure about Honda..
I looked at that video 10 times and I guess those Wolverines don't sound the worst I have heard but a little more deep sound with less volume would make them sound better. Does it void the warranty if you change the muffler to an after market?
If Yamaha had put a twin and tilt wheel and turf mode in the Wolverine I would have bought one months ago. That is still keeping me from making the move. But they have the price down there really good at Abernathy's at $1000 off plus a free $1000 in Yamaha accessories. But first thing I would do is take those crappy cheap tires off and put some real ones on. I have real 2.0's on on beadlocks my little Po and they work really good and ride great and have been leak free, but they do wear pretty quick.
The stock sound is less than...pleasant, shall we say. But it sounds pretty good with my HMF full exhaust on it. As for warranty, let me put it this way, the sales manager that I purchased from asked me if I found an aftermarket exhaust yet, and if not he could recommend one. This was while I was signing papers...This is how I came to have my machine at HMF for 3 weeks lol. I am not worried about warranty. From my experience, most offroad machines the guys will cut you some slack, and just try to feel you out to see if you truly abused it and were responsible for the damage. In other words, he is not going to deny a warranty that the engine blew up if a reputable aftermarket exhaust and controller were put on. BUT, your experience may differ, it all depends on the dealer.
As for the tires...I feel like this has been beaten to death by now. My opinion may differ here, but I could honestly give a shit what tires come on it from the factory. I can't think of a single 4 wheeled machine that I have owned, all of my trucks and cars included, that has kept the stock tires on it more than a month. Factory tires are put on to save the company cost, to make the ride soft and pleasant, and to keep road noise to a minimum. They are also usually constructed lighter to save fuel and increase perceived performance. This is a general rule across the board, and obviously exceptions occur on highly specialized performance machines. For example, you are not going to see a Mustang Shelby GT-500 roll off the lot on some continental all seasons...more like some eagle F1's, or some Nitto NT-05's, etc. I have come to accept that stock tires serve one purpose to me...to load the machine on the trailer to get it home. But, this is just me, I suppose others opinions are different. I have learned my lesson, and will not run anything less than an 8ply on a SxS.
My 2Cents...