Not sure about the EPI belt for the Can-Am, but for the Grizzlies, I've read they haven't held up that well. But one always wonders how those machines are being driven.
I'm not say'in an OEM couldn't fail .... but I've just never heard anyone say they've ever had an issue with the OEM belt. And for me, I can get the OEM belt cheaper .... so .... OEM it is.
Besides, I'm not sure where you ride, but for me, 35 miles out in the sticks, by myself, is NOT some where I want to be mumbling under my breath ... "Well, that POS belt isn't any freak'in good !"

.... Savvy ??
Later ....