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Best Year for rm125


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I had an 04 YZ125 with the FMF SST pipe and had no problems at all. Just get the jetting right and ride the heck out of it. The talk is about needing to run race gas with the sst pipe, but these are factory race bikes that was designed to run on high octane. I have no problems with my 125s running 92 and up pump gas with no motor mods. Shave the head or jug and you should run the best octane fuel you can afford.

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