Jump to content
Sign in to follow this  

05 crf450 jetting

Recommended Posts

Main jet #142

Slow jet #45

Jet needle NCVU

Jet needle clip position (Standard) 2nd from the top

Pilot screw initial opening 1-1/4 turns out

The stock jetting on those are lean and if you have any mods (muffler, etc) you are def running lean!:bonk:

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this