power valve for 144

i just got my hands on an athena 144 kit for my yz 125 and it dosent have any power valve components. i was just wondering if i could just use the power valve from my stock cyl.

Not unless you match it to the bigger bore / circumfrence

I had problems with the pins on my Athena power valves so I sent my stock ones to Eric Gorr to be machined to fit the big bore. Works perfect and cost me $42. I had to send them with the cylinder to make sure they were cut right.

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