The conventional chain-driven mechanism has played a vital role in delivering power to vehicles, machinery, and numerous mechanical applications. The study investigates the chainless drive train mechanism in bicycles. Aim here is to follow the evolution of the power transmission system. The chainless drivetrain mechanism featuring specialized bearing gears and customized sprocket gears offer a groundbreaking solution for efficient power transfer in mechanical systems. This newly developed mechanism is an alternate to a conventional chain-drive mechanism. This paper aims to present a detailed design and analysis of the chainless drive train technology. This technology ensures smoother and more reliable operation, optimizing power transmission for various applications. This innovation replaces traditional chain drive with customized bearing gears and precisely designed sprocket gears, reducing maintenance and improving performance. It ensures smoother and more reliable operation, optimizing power transmission for various applications.