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Flux switching machines (FSMs) become an attractive research topic recently due to their distinct advantage of single piece robust rotor structure and suitable for high speed applications. In addition, the machines have a capability to produce high torque and power density similar as interior permanent magnet synchronous machine (IPSM) that conventionally employed in electric vehicles (EVs). This paper describes design refinement and improvement of 12-Slot 10-Pole FSM with outer-rotor configuration. In this study, JMAG-Designer ver. 13.1 is used as two dimensional (2-D) Finite Element Analysis (FEA) solver. Under some design restrictions and specifications for the target electric vehicle (EV) drive, the performances of the machine show good improvement in term of torque and power density. Finally, it is expected that the proposed machine has ability to achieve the target performances by implementing 'deterministic optimization design approach'.