[cuong-nutz]

@racerX comes to mind. Are you still around bud?

Originally Posted by Fred659

Hi, it's my first post here so I hope it will be well received.

I'm in the process of building a 09 racer and searched every where and couldn't fin any data on how cc's the pregen combustion chambers have.

I found this info for the 08-12: 11.7cc

https://www.aperaceparts.com/tech/20...ninja250r.html

if someone has the info, I would really apreciate to have it.

The reason is that I want to try to bump the compression with pregen piston in the newgen.

Thanks