The Buell Firebolt XB9R, produced between 2003 and 2004, represents a distinctive era in American sportbike engineering. Designed by Erik Buell, this model embodies a philosophy focused on agile handling, potent braking, and a unique V-twin character derived from Harley-Davidson powertrains. Notable features include an innovative truss-style swingarm that houses the engine oil and a perimeter frame with an integrated fuel tank, contributing to a low center of gravity. The Firebolt XB9R is powered by a 984cc air-cooled V-twin engine, delivering approximately 83 horsepower and 70 ft-lbs of torque, paired with a 5-speed constant mesh transmission and a belt final drive. Its aggressive styling and performance-oriented chassis position it as a unique offering in the sportbike segment.

This Factory Service Repair Manual provides comprehensive guidance for the Buell Firebolt XB9R (XB9R chassis codes). Covering the 984cc Thunderstorm V-twin engine and 5-speed transmission, this English-language manual details essential maintenance procedures, including oil changes, filter replacements, and drive belt adjustments, alongside in-depth troubleshooting and component overhaul instructions. It delves into the engine's mechanical aspects, fuel and ignition systems, braking, suspension, electrical systems, and chassis components. With detailed wiring diagrams and diagnostic information for the DDFI II fuel injection system, this manual serves as an indispensable resource for owners and technicians seeking to maintain, repair, and optimize the performance and reliability of their Buell Firebolt XB9R.