The Aprilia RS4 125 4T 2011-2014 Factory Service Repair Manual is a comprehensive guide for owners and mechanics alike. It provides detailed instructions and illustrations for all aspects of maintaining and repairing your Aprilia RS4 125 4T motorcycle, covering model years 2011 through 2014. This manual is the official factory service repair manual, providing the same information used by trained technicians. It is packed with detailed information and step-by-step instructions, making it easy to understand and follow. The manual includes detailed sections covering: * General Information, providing an overview of the motorcycle and its systems * Fuel system, covering fuel injection, fuel lines, and fuel tank * Cooling system, covering the radiator, coolant, and cooling fan * Engine top end, covering the cylinder head, valves, and camshaft * Clutch, covering the clutch plates, basket, and lever * Engine lubrication system, covering oil pump, filter, and sump * Engine Removal/Installation, providing detailed instructions for removing and installing the engine * Crankshaft/Transmission, covering the crankshaft, bearings, and gearbox * Wheels/Tires, covering wheel removal, tire changes, and wheel balancing * Final Drive, covering the chain, sprocket, and chain tensioner * Brakes, covering disc brakes, brake pads, and hydraulic lines * Suspension, covering forks, shock absorbers, and suspension adjustments * Steering, covering the steering head, handlebars, and steering bearings * Frame, covering the frame, swingarm, and bodywork * Electrical System, covering the wiring diagrams, electrical components, and troubleshooting * Appendix, containing additional information, specifications, and diagrams This manual is a valuable resource for anyone who wants to perform their own maintenance and repairs on their Aprilia RS4 125 4T. It provides clear and concise information, making it easy to understand even for those with limited mechanical experience. With this manual, you can save money on repair costs, learn about your motorcycle, and gain a deeper understanding of its workings.

The Aprilia RS4 125 4T, a sportbike model produced from 2011 to 2014, embodied a distinct blend of performance and style targeted towards youthful riders. Powered by a single-cylinder, four-stroke, liquid-cooled 125cc engine, it delivered a potent mix of acceleration and agility. The engine, renowned for its smooth power delivery and responsiveness, featured a 6-speed gearbox, enabling riders to confidently navigate both urban streets and winding roads. The RS4 125 4T sported a sleek, modern design, a hallmark of the Aprilia brand. Its low-slung profile, sharp lines, and distinctive dual headlights projected a sporty and aggressive stance. The chassis was engineered with a focus on handling and stability, featuring a lightweight tubular steel frame, inverted front forks, and a monoshock rear suspension. Beyond its performance attributes, the RS4 125 4T offered a host of rider-centric features. The instrument panel provided clear and comprehensive information, including speed, engine RPM, fuel level, and more. A comfortable rider seat, ergonomic handlebars, and well-placed footpegs ensured a comfortable ride, even on longer journeys. Notably, the RS4 125 4T served as a gateway for aspiring riders, offering a manageable power output and a forgiving handling character, making it an ideal platform to hone riding skills. Its combination of performance, design, and rider-friendliness cemented its status as a popular and sought-after sportbike within the 125cc segment, contributing to Aprilia's reputation as a leading manufacturer of high-performance motorcycles.