You ate the Hebo's promotion ?
Do you think if they paint the cylinder head cover to black, and make a very sloppy porting (we can say it's only a port cleaning, good to have but doesn't a huge improvement) they can ask a tonns of money? Doesn't worth it. Just think: The MAlossi and Polini cylinders are much more better in quality (NiKaSil etc) and you can even tune them for that money.
The simple revolution is a real revolution too, nice racing look red cover, wow!
Hebo do the modification that the others already have.. The new head material is shining creation, not bad but it isn't reasonable.
Don't think I hate Hebo, I used Manston II cylinder, it wasn't bad, but this innovation is a joke!