This document pertains to the 250/450/525 SX, MXC, and EXC models from the 2004 production year. These high-performance off-road motorcycles are celebrated for their powerful single-cylinder engines, robust chassis, and capable suspension systems, making them ideal for competitive motocross and enduro riding. An Austrian manufacturer with a strong heritage in off-road racing, engineered these bikes to deliver exceptional power delivery and handling, often achieving championship status in their classes. The models are characterized by their reliable LC4 engine derivatives, 6-speed manual transmissions with hydraulic clutches, and advanced WP suspension components.

This parts catalog serves as an indispensable resource for owners, technicians, and enthusiasts. It provides detailed identification of all engine components, featuring exploded views crucial for accurate disassembly, reassembly, and parts lookup. The manual covers a wide array of engine parts, including cylinder, piston, crankshaft, valves, camshaft, carburetor, clutch, and gearbox components, as well as related ancillaries like the exhaust and cooling systems. Its comprehensive coverage ensures that users can efficiently identify correct OEM part numbers for maintenance and repair, thereby preserving the performance and longevity of their 250, 450, or 525 SX, MXC, or EXC motorcycles.