Stock doesn't break because it's short. Not because it's necessarily stronger. I have seen extended stockers break on other atvs.
to clarify MD...
I don't trust extended stockers any more than aftermarket. the stock is a solid piece of metal...even extended stocker will be weaker because it is separate pieces of metal welded. you are at the mercy of those welds. No offense to those that make them....it is just not for me. SOmething that costs so much , because you are supposedly "upgrading" from stock to it....should
NEVER, EVER break. Any so called "upgrade" MUST be better than stock in every way or it is useless. WHy would I pay extra for something that can't even do the job of a stocker? ANything over +2 swingarms make the raptors look silly too. And not as fun to ride (totally IMO of course)
Again, This does not apply to drag racers, which is the point of the extended swingarms, and they work great for that. I am sure there are many out there that do not break as well. BUt unless it is 100%, it is not worth it to me...because I do not ride that much, but when I do, I ride it hard. It is Unnacceptable for any of that time that I get to ride to become rebuild time, or argue with swingarm builder time because I broke it.
wow, that came out extra wordy
sorry. can't really say much more.