Quick Question...

[kx_guy86]

I have an FMF Fatty pipe on my 1999 KX 125. Was wondering if the jetting needs to be changed. Runs fine but just curious. Thanks

 

[ryanfoley]

if it runs fine then its all good

 

[Zenith]

It's a bit difficult for us to tell from here with no details :) so I suggest you read this jetting guide and then come back if you need help http://www.ericgorr.com/techarticles/carbtuning.html