This Thread is about their iron Magnum replacement heads that are advertised at 179 CC which they are not . Would have been huge for an iron... let alone a magnum Ironhead. This Thread is not covering the aluminum Speedmaster "cyber special" heads.
Speed master has still not changed the advertisement of those heads. They know they are only a 150cc intake port and dont care because speedmaster is a company built on **** and lies produced by china.
