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rjs6700 Added a reply to Stutter after top end job

10/18/2024 6:49am
Oh, I didn’t notice that and didn’t have options when I ordered. I see 53.95, 53.96 and 53.97, which is A B or C? I’m convinced it’s piston related as I’m sure I didn’t fix air leak when putting old one back in, then cause air leak when trying new again.

rjs6700 Started a new thread Stutter after top end job

10/17/2024 4:55pm
Bought an 05 RM125 this year and it ran fine. Recently put a top end in it and it would stutter about where power and should be. Checked power valve, cleaned carb and put stock jets in, no change. Put old piston back in and it ran even better than before. Probably jetting. Tried another brand of piston and same...
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