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    Button to Roller Clutch Swap

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    • Member since
      March 2016
    Button to Roller Clutch Swap
    Posted by abaker262 on Tuesday, March 5, 2019 7:28 AM

    Hi All,

    I have a 1997 ZRT 600 that I need to replace the secondary clutch on.  The machine is completely stock and my current secondary is using the 53° straight helix and the Arctic Cat yellow spring.  As long as I am replacing the clutch, I was considering upgrading to a roller secondary that was used in the '99 (I think) onward machines.  This leads me to 2 main questions.

    1. Am I missing something that makes this swap impossible?  I have seen several forums saying you can't just put a new roller cover onto an older button secondary because of different clutch tower heights (you have to use one of the early 440 roller covers or an aftermarket one), but I have not seen much info on just moving to the newer generation secondary altogether.
    2. It would seem logical to me that using the same calibration for a roller as a button secondary would not work out quite right.  It seems like I should have to go to a steeper helix angle or a stronger spring (or both) to compensate for reduced friction on the roller secondary and maintain my shift RPM.  Are there any rules of thumb to get me into the ballpark and at least maintain stock performance?

    Also, if I have just missed a thread where this is discussed, please point me there.  I don't want to waste anyone's time.


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