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I have a ttr 125 and it runs pretty lean, I know for sure I want to get bigger jets and I think I know what I want to get, I want to get 110 main and 17.5 pilot do you think those will run well with my ttr 125 and should I call Yamaha to order them for me??

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Why do you think it is lean?

Pilot jet is for idle, main jet is only when the engine is at peak rpm and WOT. Everywhere else is the needle. If the bike runs smooth, a change in jetting will only make it run worse.

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