This manual covers the 2013 450 SX-F and 450 XC-F models, high-performance off-road competition motorcycles built with a renowned 'Ready to Race' philosophy. These Austrian-engineered machines are designed for motocross and cross-country racing, emphasizing powerful performance, agile handling, and lightweight construction. Key features include a liquid-cooled, DOHC, single-cylinder 4-stroke engine with electronic fuel injection and a robust chromium-molybdenum steel trellis frame. The 2013 model year is notable for the introduction of the WP 4CS front forks, a significant advancement in suspension technology. This Factory Service Repair Manual provides comprehensive, in-depth information essential for the maintenance, repair, and troubleshooting of these specialized vehicles. It details procedures for all major systems, including the engine, fuel system, ignition, transmission, clutch, suspension, brakes, and electrical components. The manual includes routine maintenance schedules, detailed disassembly and reassembly instructions, technical specifications, torque values, and diagnostic guidance for common issues. It is intended for dealership technicians, professional mechanics, and advanced DIY enthusiasts seeking factory-level accuracy for optimal vehicle performance and longevity.