No, they're not all the same. Mine is a wide-roller design and it is also a P-85. I never noticed it until i read it in the specs. I think most XC's are wide-roller, but i'm not sure.
Storms, 700XC, 600XC and 1998 440 XCR have the wide roller. All others are narrow roller. I know, i just ordered a primary rebuild kit today, with all the stuff that's super worn on my P-85 clutch.
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