[Racer x]

Why are they changing the BF from 50%? Is it because you lightened it?

I have light rods by Carillo. (first set they ever made for a 250 ninja. and JE pistons. The pistons are among the first batch made. Between the two it is about the stock weight and they used 50% as the Balance factor.

We are in uncharted terretory with this motor. I have bike number 00769 and have been having parts made since 2008. In 2008 there was nothing. I paid RD charges to make head gaskets. I had to convert to first gen ignition. And had to wait for parts to start coming out.

Now we have all sort of cool aftermarket parts. But there are not that many people doing major engine work.

I have talked to another shop about balance. They just needed the factor and the crank needs to be 3/4 inch throw or the have to make custom weight bags.