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About bobby-WR250F

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  1. bobby-WR250F

    Jetting D-Base for YZ/WR 250F

    Model (YZ or WR 250F): WR 250 F 2005 Timing (WR-YZ): YZ Main jet: 178 Pilot Jet: 45 Pilot air jet: Slow Air Screw and Spring from kehin, 1 turn open Fuel screw (turns out): 1 3/4 Needle model/Clip position:OBEKP #4 Airbox lid (on or off): Snorkel removed and YZ holes cut out Pipe: akrapovic evolution 2 with FIM db-eater Altitude where you ride: 0 - 1000 m Temperature where you ride: 50 - 80 Other mods: PMX accelerator pump cover, gray wire, yz 2005 exhaust cam, powernow, yz throttle stop Degree of satisfaction: very great satisfied. Ride on Bobby