The 2006 Road King Custom (FLHRS) represents a blend of classic American motorcycle design and custom styling, built for comfortable long-distance touring and everyday riding. Known for its V-Twin, Air-Cooled, Twin Cam 88B engine with a 1450cc displacement, this model offers robust performance with an estimated 65-70 HP and 85-90 lb-ft of torque. The legacy of this motorcycle manufacturer, stretching back to 1903, is evident in the Road King Custom's engineering quality and reliability, emphasizing a dropped and streamlined aesthetic that sets it apart within the FL Touring family. Standard features like electronic cruise control and hydraulic disc brakes contribute to its rider-focused appeal. This Service Repair Manual is an indispensable resource for maintaining and repairing the 2006 Road King Custom. Covering a comprehensive range of systems, including the engine, transmission, electrical system, fuel system, suspension, brakes, and bodywork, this manual provides detailed, step-by-step instructions with high-quality diagrams and exploded views. It is designed for both professional technicians and do-it-yourself enthusiasts, offering guidance on everything from basic preventative maintenance and fluid changes to complete engine and transmission rebuilds, as well as troubleshooting and diagnostics. The manual aims to ensure the longevity and optimal performance of your motorcycle.