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Discussion Starter · #1 ·
I have a 1997 polaris classic and the head has an E-2 on it. I got a replacement head that was thought to be from a 1997 rmk 500 with an E-4 on it . The lip from the head down into the dome surface is much deeper on the E-4, Anyone know what 500 heads will fit my 1997? Thanks
 

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Discussion Starter · #3 ·
The E-2 head has 23cc and the E-4 head has 29cc. Any idea how much this would drop compression, Thanks
 
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