Athena gasket set complete Complete set of gaskets for Athena cylinder kit. Athena is the first original equipment manufacturer (since 1973) leading Italian motorcycle manufacturers, and many other brands. Seals are manufactured according to European quality standards (ISO 9001, ISO TS 16949, ISO 14001) and are therefore under permanent quality control. A constant quality is thus guaranteed. Athena used to make her poems only OE tested and certified raw materials.