jetting advice

[wanta450]

does anyone think that a 152 main jet is the right size for a big gun evo x slip on with every thing stock airfilter and lid on an 05 450r there is nothing else done to the bike and we are at 600 to 1000 ft above sea level

[wanta450]

anyone :(

[eagertorace]

try it and see. main jets are easy to change out. put a new spark plug in there, install the jet and ride it, then check your plug for color, it should be a chocolate (sp) color.

[Chango]

Buy the JD jet kit . Was a good improvment over my HRC needle and they have a list of settings to help you . Around 40 bucks