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Mikuni TM38 Flat Slide Conversion

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Why? I think the Keihin that came with it worked just fine. i don't recall anyone changing them and I was racing pretty regularly back the.

This is what was FMF recommended on a 89 RM250 with the Mikuni. This should get you close.

Main 370
Pilot Jet 55
Needle STOCK
Clip Position 3RD
Air Screw 1.5 out

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