This manual covers the 450 EXC-R, 530 EXC-R, 450 SIX DAYS, 530 SIX DAYS, 450 XCR-W, 530 XCR-W, 450 XEC-W, and 530 XEC-W motorcycles from the 2008 model year. As an Austrian manufacturer with a strong racing heritage, KTM is known for producing high-performance off-road motorcycles. These models, equipped with single-cylinder, 4-stroke LC4 engines in 449.3cc and 510.4cc displacements, offer robust performance for demanding off-road applications, building upon the legacy of previous EXC and RFS models. They feature liquid-cooled engines, fuel injection, electric starters, and 6-speed manual transmissions with hydraulic wet clutches, all contributing to their reputation for engineering quality and reliability in competitive environments. This comprehensive workshop service repair manual provides factory-level detail essential for the maintenance and repair of your motorcycle. It covers all major systems, including engine overhaul, lubrication, cooling, fuel, ignition, exhaust, starting, and emission controls, as well as transmission, drivetrain, chassis, suspension, electrical systems, and braking. The manual includes detailed procedures for scheduled maintenance, oil changes, filter replacements, fluid checks, and component repairs, alongside in-depth troubleshooting guidance and diagnostic procedures. With clear, step-by-step instructions and zoomable illustrations, this manual is an invaluable resource for owners, professional mechanics, and restoration enthusiasts seeking to maintain their motorcycles in optimal condition.