The 2025 KTM 450 SX-F is powered by a 449.9 cc liquid-cooled single-cylinder 4-stroke SOHC engine with Keihin electronic fuel injection and 44 mm throttle body, electric start, 5-speed transmission, wet DDS multi-disc clutch with Brembo hydraulics, and 520 chain final drive delivering explosive motocross performance with strong torque and high-revving power. The chassis features a central double-cradle 25CrMo4 steel frame with aluminum-reinforced polyamide subframe designed for optimal rigidity and lightweight handling. Suspension includes WP XACT 48 mm AER upside-down front forks providing 310 mm travel and a WP XACT rear monoshock with linkage delivering 300 mm travel for precise race control. Braking is handled by 260 mm front disc and 220 mm rear disc with Brembo components. The motorcycle rides on 21-inch front and 19-inch rear wheels with motocross tires. Additional specifications include seat height 958 mm, ground clearance 343 mm, dry weight Approx. 102.6 kg, and fuel tank capacity 7.2 L.