The notion of BCK-algebras was proposed by Iami and Iseki in 1966. In the same year, K. Is´eki [4] introduced the notion of a BCI-algebra which is a generalization of a BCK-algebra. Since then numerous mathematical papers have been written investigating the algebraic properties of the BCK/BCI-algebras and their relationship with other universal structures including lattices and Boolean algebras. There is a great deal of literature has been produced on the theory of BCK/BCI-algebras, in particular, emphasis seems to have been put on the ideal theory of BCK/BCI-algebras see[ 3 ]. For the general development of BCK/BCI-algebras the ideal theory plays an important role. Y. Komori ([6]) introduced a notion of BCC-algebras, and W. A. Dudek [1] redefined the notion of BCC-algebras by using a dual form of the ordinary definition in the sense of Y. Komori. In([1], [2]), C. Prabpayak and U. Leerawat introduced the concept of KU-algebra . They gave the concept of homomorphism of KU-algebras and investigated some related properties. In this paper the concepts of KUS-algebras, KUS-sub-algebras , KUS-ideals , homomorphism of KUS-algebras are introduced. The relation between some abelian groups and KUS-algebras , the G-part of KUS-algebras are studied and investigated some of its properties.