The clutch kits didn't do what you would think they should on the larger machines. You did a bunch of work on my kids etons years ago. Your best bet is aftermarket primary. You will get a lot of different opinions on who's is best. I havnt run all so can't say what is best but I can tell you the clutch kits I ran didn't come close to com pairing to a new primary. I happy with my STM setup I have.
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