Jet for QT50? (Everything stock except for air filter)

I got a K&N filter (RC-2540) on my QT50; looking for jets I should try out.

Re: Jet for QT50? (Everything stock except for air filter)

70, 75. I run 70 with K&N all day with no prob. all else stock. The ALL stock set up runs a little rich with the #70 so a high flow filter with all stock is ok but I wouldn't go bigger than 75.

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