This comprehensive Aprilia RS125 RS 125 1999 Workshop Repair Service Manual provides a wealth of information for servicing and maintaining your motorcycle. It covers a multitude of topics, ensuring you have the knowledge and guidance to tackle a wide range of repairs. Start with the essential General Information section, which lays the groundwork for understanding your RS125. Delve into the inner workings of the motorcycle with sections dedicated to the Fuel System, Cooling System, and Engine Top End. Learn how to handle the intricate components of the Clutch and Engine Lubrication System. The manual also includes detailed instructions for Engine Removal and Installation, making those major tasks approachable. Dive into the intricacies of the Crankshaft and Transmission, followed by the essential components of your RS125's Wheels and Tires. Explore the Final Drive system, understanding its role in transmitting power to your rear wheel. The manual guides you through the complexities of the Brakes, Suspension, Steering, and Frame. A dedicated section on the Electrical System provides invaluable insight into diagnosing and resolving electrical issues. The manual concludes with an extensive Appendix, offering a wealth of supplemental information. This manual is an invaluable resource for any RS125 owner who wants to maintain their motorcycle in top condition, saving you time and money on service costs. With clear and detailed instructions, comprehensive diagrams, and numerous illustrations, you can confidently tackle repairs and maintenance with the authority of a professional mechanic.

The Aprilia RS125, launched in 1999, is a high-performance sportbike that quickly became a legend in the world of small-displacement motorcycles. It was a stark departure from its predecessor, the AF1, offering a sportier design and a significantly more powerful engine. The RS125 was powered by a liquid-cooled, single-cylinder, two-stroke engine displacing 124.8cc and producing an impressive 28 horsepower at 10,500 rpm. This power, coupled with a dry weight of just 109kg, resulted in a thrillingly nimble and fast machine. The RS125 was also lauded for its handling prowess, thanks to a well-balanced chassis and a responsive, adjustable suspension. The bike featured a trellis frame, upside-down forks, a single rear shock absorber, and a mono-shock rear suspension, all contributing to its exceptional agility and stability. The RS125 was offered in a variety of vibrant colors, further enhancing its appeal to young riders. It became incredibly popular among both novice and experienced riders, particularly those seeking a competitive edge in track racing. Its lightweight design, powerful engine, and exceptional handling made it a formidable competitor in the 125cc class. The RS125’s success led to several iterations, each with refinements and updates to the engine and bodywork, cementing its position as a timeless classic in the world of sportbikes. The 1999 model, in particular, represents a significant milestone in Aprilia’s motorcycling history, marking the beginning of a successful legacy that continues to inspire riders today.