I have a z-250 with a procircuit t-4 exhaust and head pipe, plus a k&n air filter. What should i change my jetting to, i ride at little sahara in utah.
Thanks

 

if u dont need to jet ur carborator then dont rush into it really, but there are two good brnands made for the z250 and they are FMF and K&N, also theres a mosse ket kit but its more expensive, sometimes u can find dyno jet ones too. but i would say go with the K&N jet kit for ur quad, its cheap, powerful, and a good name brand! also make sure u have a professional install it (local quad dealer) if u dont no wut ur doing!

 

I have a z250 with a DG slip on and a k&n and i had to rejet to keep it from missing. It was running to lean when it was cold and it would miss real bad. The jet kit i used was the moose/dyno jet, there the same thing. If you are at all mechanically inclined you can jet the carb yourself. It has photo's and very easy to follow directions?
If you have questions email me at mattmiddleton709@hotmail.com