rv4 polini or malossi cylinder kits?
Hi all, not quite sure if i'm in the right area, but i was wondering which kit is better for the rv series of engines, i have seen polini and malossi cylinder kits and would like to know which is the best, also the power and how much they can rev to. Also what cc are they as i have only seen 70cc(47mm) and no 80cc(50mm's).
Thanks for your help.