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nbirkes

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About nbirkes

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    TT Newbie

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    Texas
  1. I checked the compression on my 2003 CR 125 the other day and it was 120psi. From what I have read 160-180psi is optimal. I plan on installing a new piston and rings, but is there anything else I need to do, such as honing the cylinder? I just want to make sure that I have optimum compression when I am finished.
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