This manual covers the 400 and 450 SX, MXC, XC, EXC, SMR, and SXS RACING models produced between 2000 and 2007, featuring 400cc and 450cc four-stroke engines. The brand is recognized for its strong off-road racing heritage, and these models embody that legacy with their focus on performance, handling, and competitive capabilities. The engineering quality and reliability inherent in the Austrian manufacturing are reflected in the robust design of these versatile machines, suitable for motocross, cross-country, enduro, and supermoto applications.

This comprehensive digital workshop manual provides essential technical information for maintaining and repairing these motorcycles. It details engine mechanical and electrical systems, diagnostics, troubleshooting, and repair procedures for various model variants. The manual covers routine maintenance, complete engine teardown and reassembly, electrical system diagrams, and specific fluid requirements. It is an indispensable resource for owners and technicians seeking to ensure optimal performance and longevity of their 400/450cc models.