This manual pertains to the RT125D, an entry-level sport-style motorcycle produced by the South Korean manufacturer, likely during the late 2000s to early 2010s. Designed for riders seeking accessible performance, the RT125D typically features a 125cc, single-cylinder, air-cooled, 4-stroke engine, often paired with a 5 or 6-speed manual transmission and a wet multi-plate clutch. The motorcycle's engineering focuses on reliability and a sporty aesthetic, making it a popular choice for commuting and recreational riding. This parts catalog provides essential information for maintaining the integrity and functionality of this model.

This Replacement Parts Manual is an indispensable resource for owners, independent repair shops, and parts suppliers of the RT125D. It comprehensively covers all components and assemblies, including detailed exploded view diagrams and official part numbers for the engine, transmission, chassis, wheels, brakes, electrical system, fuel system, controls, and bodywork. The manual's primary purpose is to facilitate the identification of correct replacement parts, aiding in disassembly, repair, and assembly processes. By providing precise part identification, this catalog ensures that the vehicle’s original specifications are maintained, contributing to its longevity and performance.