I know all or most of you have experience with belt drive in Big Bore ATV'S. I have POL 500 Sportsman and has been flawless so far except for tran's clunking, which they tell me is normal. 400 mile's so far and aok. I want to upgrade to a pol 800 or whoever has most reliable trans. I ride trails, hardpack, some rock, very little mud, fire trails mainly and very little snow. I don't like this clunking in the transaxle. I have another thread about trans clunking. It seems to run fine but I feel it is only going to get worse.

 

Yamaha's transmissions are great. Near bullet-proof.