Jetting

[RevHappy]

I bought a full system for my 2001 kdx 200 I put in place of the stock exhaust with an FMF exhaust exhaust. I havent touched the jetting do they make bike specific jet kits with dirtbikes where do I start to look? Thanks

[R7]

Find out what size main jet the bike has now and maybe step up a notch or 2. I may even have a bunch of jets from my banshee that will work. You can also adjust the needle clip.

I just put a slip-on on the 450 and did the rejet at the same time. I went from a 158 main jet to a 180 with no clip changes, the airbox lid has also been removed. The thing runs flawless Though it is a bit on the loud side

[Idiotboy]

The KDX is jetted crazy rich stock. I put a pipe, silencer, RAD valve,ported cylinder and rifle bored carb on mine,took off the airbox lid, and jetted it one step leaner everywhere,main, needle, and pilot.It was still a bit on the rich side, but never puked a plug so I rode it like that.GREAT trail bike.Let it breath a little, you'll be amazed at the difference.