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View Full Version : Lowest main jet for stock 85 ATC250R currently @ 135 main and crisp!



whyzee
03-19-2010, 03:08 PM
just got done with winter riding at a 148 main, returned bike to stock jet and needle clip , 142 and 2nd clip. Noticed stock jetting is waay to rich for trail riding. I am currently at 1st clip needle and 135 main. Bike is so fast and crisp it is unreal. Trails are real tight for more than 2 seconds of WOT.
Bike is totally stock.
anybody else end up this low on their main jet before? Temps are in the 60's