The 2026 KTM 450 SX-F is powered by a 449.9 cc liquid-cooled single-cylinder 4-stroke engine with electronic fuel injection, ride-by-wire throttle, slipper clutch, 5-speed transmission, and electric start delivering strong torque and linear power for motocross competition. The chassis features a lightweight chrome-molybdenum steel frame with WP XACT 48 mm inverted front forks offering Approx. 310 mm travel and a WP XACT rear shock with linkage providing Approx. 310 mm travel for precise handling and stability on rough terrain. Braking is handled by disc brakes with Approx. 270 mm front rotor and Approx. 240 mm rear rotor supported by a hydraulic brake system. The bike rides on 21-inch front and 19-inch rear wheels with high-performance motocross tire sizes 80/100 front and 110/100 rear, and uses a 520 chain drive. Additional specifications include Approx. 106 kg dry weight, Approx. 960 mm seat height, Approx. 350 mm ground clearance, compression ratio 13.5:1, bore 95 mm, stroke 63.4 mm, adjustable suspension, and electric start system for elite motocross capability.