I I've been doing some research and Most of the guys on the R1 forums (even race bikes) are running the YAMAHA Stock Clutch over the aftermarket ones.
doesnt the weight of the rhino affect the clutch. i would figure it weights 3 times as much as a r1 and the heavy duty clutch is needed to prevent slipping. i dont own a r1 rhino, just going off what i read from before