The 2006 Buell XB9R Firebolt is a sportbike renowned for its innovative engineering and distinctive American performance heritage. Featuring a 1203cc air-cooled V-Twin engine, it delivers robust power and torque, complemented by a 5-speed transmission and a hydraulic clutch. Buell's design philosophy of mass centralization is evident in the XB9R, with features like the perimeter frame doubling as a fuel reservoir and the unique ZTL braking system. These elements contribute to its agile handling and spirited riding experience, making it a notable entry in the sportbike category of its era. This comprehensive factory service manual provides essential information for maintaining and repairing the 2006 Buell XB9R Firebolt. It covers a wide range of topics, including detailed procedures for engine mechanicals, fuel delivery and ignition systems, transmission, chassis components, and the electrical system. The manual offers guidance on routine maintenance, complex engine and transmission rebuilds, suspension adjustments, brake system servicing, and electrical diagnostics. With its in-depth coverage and clear explanations, this manual serves as an invaluable resource for owners, technicians, and enthusiasts seeking to ensure the optimal performance and longevity of their Buell XB9R Firebolt.