The 2025 GasGas MC 125 is powered by a 124.5 cc liquid-cooled single-cylinder 2-stroke engine with electronic fuel injection, Power Valves, 6-speed transmission, and electric start delivering strong torque and responsive power for motocross riding. The chassis features a lightweight chrome-molybdenum steel frame with WP XACT 43 mm inverted front forks offering 310 mm travel and a WP XACT rear shock with linkage providing 310 mm travel for excellent traction and handling. Braking is handled by disc brakes with a 260 mm front rotor and 220 mm rear rotor supported by a hydraulic brake system. The bike rides on 19-inch front and 16-inch rear wheels with high-performance motocross tire sizes 70/100 front and 90/100 rear, and uses a 520 chain drive. Additional specifications include Approx. 97 kg dry weight, Approx. 915 mm seat height, Approx. 320 mm ground clearance, compression ratio 11.5:1, bore 54 mm, stroke 54 mm, adjustable suspension, electric start, and lightweight aluminum swingarm optimized for competitive motocross performance.