Re-Jet

[TRXRIDER4567]

I have a bone stock kfx 400 and im putting a slip on exhaust and most likely keeping the air box lid on. i just wanted a rough estimate of what i would need for jets. Thanks!

[cataway]

with lid on ,i would be surprised if any jetting would need to be change ,maybe if you pull the snorkel off then maybe up a jet size. elevation has some thing to do with it to