RM125 carb mod keihin 38mm pwk air striker. what size jets?

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12/19/2017 6:47 PM

Yeah I live in North Carolina it’s pretty cold. What year is your bike? Gonna go try out a 180 main and 50 pilot

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12/20/2017 4:00 PM

Mine is 1992. Your jetting is probably gonna be different from mine. It could be the same but i doubt it since i have a "custom" airbox.... Mine is lean at 178 but its pretty damn cold in Southwest pa this time of year. Ive made lots of progress since I started tho. Trial and error,.........
Good luck and post your progress on here. It will help the next guys

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12/25/2017 9:48 PM

I have found the NEDJ needle, it's for sale along with the #4 pwk slide.
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7/19/2018 8:46 AM

Di you ever sort out the jetting on the bike? I too have a stock 1992 rm 125 and need a new carb. Was going the route of a 04 rm 125 mikuni, but that is a 38mm . I need help as well. please post your results/opinions. Would you recommend using the 38mm or should I stick with the stock size.(either way I still need ot buy one)

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