Re-jetting for Ti-4

Hey guys, I just bought a PC Ti-4 GP Lowboy system for my 08YZ250F and I was wondering do I have to re-jet before I put it on? Will it hurt the bike if I ride it a few weeks before re-jetting?

It won't hurt it, you just wont be making as much power as you could. Do you know whats in your carb currently? You'll probably want to start with 180mj 45pj 1 1/2 turns on the fuel screw and a 55leak jet.

It has a 178 main jet and a 42 pilot jet and a 70 leak jet right now

I had best luck with what I suggested... I think pro circuit recommends the same also..

Ok thanx man

Create an account or sign in to comment

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

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now