Ok, this winter I am doing some mods to my 09 KLX250s. I am getting the Muzzy full exhaust and the dynojet kit 2152. What else do I need? I see people talking about aftermarket needles and jets etc. Im a car mechanic, not real good with bikes. What else do I need to order to make this thing come alive when I do the exhaust and jet kit? Part numbers would help.

 

Uni Filter or Twin Air should ice your cake.
Moose Racing also has good filters. If you're not heading off-road then I hear K&N is the way to go.
See here for the some part numbers.
https://www.kawasakiforums.com/forum...ad.php?t=24912

 

What about fuel screw and needle. I see people listing aftermarket ones, do i need to get these for my 09 when I do the dynojet kit?

 

The dynojet kit comes with all you need needle included. As far as the Fuel Scew goes you can keep the stock one or go with the Kouba Fuel Scew from Kouba Link. Its a nice option as it is a t-handle scew which makes it easy to adjust the mixture. Another thing you might consider is a larger pilot jet which the DJ kit does not have but most i think kept the stock pilot.