Athena Complete Reduced Gasket Kit E2109-192 Include all paper gaskets and head O-rings (2-strokes) and oil seals (complete kits); do not include rubber-shaped gaskets and valve stem seals Superior-quality gasket sets from Athena S.p.A Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high spring-back and superior tensile strength