hello i just want to ask which of they's 70cc kit is better? http://www.pedparts.co.uk/product/535/stage6-70cc-sport-pro-ac--piaggio http://www.pedparts.co.uk/product/140/polini-sport-70cc-cylinder-kit-piaggio-air-cooled i think the stage6 sport pro is better then the polini coz the polini is cast iron and the stage6 is aluminium what you think people?
Why? standard cylinder is aluminium so i think to put a cast iron instead of a aluminium would make it heavyer.
