I just wanted to comment on the primary clutch "slipping" comments. I am one of the fortunate ones who didn't have any problems with my stock primary but I still upgraded to a QSC/STM setup anyways. I marked my primary to monitor if I could see it slipping. And when I went to pull it off to replace it, the marks were still lined up. Also, I had to whack the outer sheave pretty good to get it to pop off. So I can honestly say that mine never slipped. HOWEVER, I did slightly burn a belt just pulling it on the trailer……so I think a lot of people are confusing belt slippage with the clutch slipping. The belt slipping has to do with insufficient clamping force by the clutch and not the sheave spinning (in my case anyways). Again, I know that some peoples are slipping but not all of them and I would venture to guess most of them do not. For the life of me i don't understand why they built it this way either. Simply putting some cogs or serrations on the mating surfaces would eliminate any possible chance of slippage…...Well let's not forget the primary is technically a design flaw...don't matter how its installed. The stud may work but who knows. There's a reason the inner and outer sheaves are locked on all aftermarket primary setups and the warranty was extended by BRP for the factory equipment.
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