Retrofitting involves integrating new technology or features into existing systems while preserving their original structure and design. This paper outlines the initial design procedure for converting the internal combustion engine (ICE) of a two-wheeler into an electric vehicle (EV), emphasizing the critical role of the battery pack and motor in achieving cost-effectiveness and optimal vehicle performance. The need for this study arises from the imperative to address environmental concerns and reduce carbon emissions associated with traditional internal combustion engines. As the global push toward sustainable transportation intensifies, retrofitting offers a practical solution to transform conventional vehicles into eco-friendly alternatives. The design process begins by considering various ICE drive cycles—such as Federal test procedure highway (FTP-HIGHWAY), new European drive cycle (NEDC), and worldwide harmonized light vehicle test procedure (WLTP)—to establish essential parameters. Utilizing a MATLAB Simulink model, this study analyzes the aforementioned driving cycles, examining metrics like wheel force, torque, RPM, and motor power to assess the vehicle's performance requirements. Comparative analysis among these drive cycles serves as the foundational step in customizing the retrofit for a two-wheeler. By systematically addressing the intricacies of the retrofitting process, this research aims to facilitate a smoother transition towards electric mobility and contribute to the ongoing efforts in combating climate change and fostering sustainable development. This research presents valuable insights for beginners keen on understanding electric vehicle technology, providing a comprehensive overview of the initial design considerations and methodologies essential for successful retrofitting projects. As the global automotive industry continues to embrace electrification, the findings of this study are poised to guide future innovations and advancements in sustainable transportation solutions.