The 2011 TXC449 and TXC511 represent a significant offering in the performance off-road motorcycle segment. These models, part of the first generation TXC series, are built with the robust engineering characteristic of a brand with a rich history in competitive motorcycling. Designed for demanding motocross and enduro riding, they likely feature a liquid-cooled, four-stroke single-cylinder engine, with displacements around 449cc and 510cc respectively, and are expected to deliver performance suitable for competition. Their construction prioritizes lightweight agility and durability to meet the challenges of off-road terrain. This comprehensive factory service repair manual provides essential information for maintaining and repairing the 2011 TXC449 and TXC511 models. It covers all aspects of the vehicle, including detailed procedures for engine, drivetrain, chassis, and electrical systems. The manual offers step-by-step instructions for routine maintenance, diagnostics, and complex repairs, along with troubleshooting guides and wiring diagrams. Its depth of coverage is suitable for both experienced owners undertaking DIY servicing and professional technicians, empowering them with factory-level knowledge to ensure optimal performance and longevity of the motorcycle.