Set Up! Kamen Rider X (セタップ！仮面ライダーX Setappu! Kamen Raidā Ekkusu) is an opening theme (OP) from Kamen Rider X. It was performed by Ichirou Mizuki. * Lyrics: Shotaro Ishinomori * Composition: Shunsuke Kikuchi * Arrangement: Shunsuke Kikuchi, (Victor Cover Version: Hiroshi Tsutsui), (King Record Cover Version: Nobuhiro Satou), (Phillips Cover Version: Hideki Hagihara), (Rider Chips Version: Cher Watanabe) * Artist: Ichirou Mizuki, (Victor Cover Version: Masato Shimon and Young Fresh), (King Record Version: Hiroshi Ikeda), (Phillips Cover Version: Nobuyuki Tadokoro), Rider Chips