The 2011 KTM 450 SX-F and 505 SX-F represent the pinnacle of KTM's high-performance motocross and supercross competition platform. These models are engineered for demanding off-road racing, featuring advanced WP suspension, a lightweight chrome-molybdenum steel frame, and powerful liquid-cooled, 4-stroke engines. Renowned for their race-proven technology and agile handling, the SX-F line has consistently earned accolades and awards for exceptional power delivery and chassis performance, making them a top choice for professional racers and serious off-road enthusiasts.

This official factory service manual provides comprehensive coverage for the 2011 KTM 450 SX-F and 505 SX-F, focusing on engine service and repair. It details procedures for engine mechanical work, lubrication, cooling, fuel, ignition, and exhaust systems. The manual also includes scheduled maintenance, troubleshooting, diagnostics, rebuild instructions, and essential technical specifications such as torque values and special tool requirements. Designed for both owners and professional technicians, this manual is an indispensable resource for maintaining, troubleshooting, and repairing these competition-grade machines to ensure optimal performance and longevity.