ya i have an artic cat roller on my 97 summit 670 it was like that when i got it and the shaft was either welded and then machined because i tried to put a doo clutch on because my belt kept dropping too soon but ended up putting the purple spring in and now have no troubles
I just bought this thing and it has good bottom end but in the deep powder its slow and boggs but on the hard pack it rips up to 180km @8500 rpm im thinkin of trying a belt first but i have the factory summit belt and the dealer said thats not the one to be using and ask the pros