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Author Topic: 1998 kx125 tuning HELPPP!!!  (Read 2017 times)

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Offline kx92nateee

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1998 kx125 tuning HELPPP!!!
« on: September 16, 2009, 04:48:56 AM »
i have a 1998 kx125 i have a pro cuircut platinum pipe and r304 silencer i jus need to get the tuning right for max power.......i need advice maybe a chart for click position on needle and fuel to ar ratio screw and i run 52;1 mix thanks..
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Offline Hillclimb#42

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  • '97 kx 500, '96 kx 250, '99 KTM 380
Re: 1998 kx125 tuning HELPPP!!!
« Reply #1 on: September 27, 2009, 03:34:23 AM »
Pro Circuit is sayin' stock is a 160 main, and to change that to 158. Leave the stock 42 pilot and change the clip to 4th position. Stock is 3rd. Start at 1 1/2 turns out.
 Pro Circuit and FMF have jetting info, and have been close for me.
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