What is the solution to the Kawasaki 400 speed limit?
3 Answers
Kawasaki 400 speed limit solutions are: 1. Replace the ECU; 2. Refresh the vehicle's computer. The Kawasaki 400 has the following dimensions: length 1990mm, width 710mm, height 1120mm, with a wheelbase of 1370mm, a minimum ground clearance of 140mm, and a body weight of 168kg. The Kawasaki 400 is equipped with a twin-cylinder, water-cooled, DOHC 8-valve engine, with a displacement of 399cc, producing a maximum horsepower of 45ps, a maximum torque of 38Nm, and a maximum power of 33.5kW. It features a 310mm single front brake disc and a 220mm single rear brake disc.
As a frequent motorcycle rider, the Kawasaki 400's speed limit is mainly due to the factory ECU lock. I've adjusted it several times myself. By connecting a diagnostic tool to the OBD port and flashing the ECU data, the limit can be removed. Find a reliable modification shop or buy a professional kit to do it yourself—the process is simple but requires backing up the original settings. After adjustment, the engine responds faster, and the top speed can increase by over 20 km/h, but fuel consumption will be slightly higher. Beginners shouldn’t attempt this recklessly, as incorrect operations could damage the circuits. It’s advisable to seek help from an experienced friend—safety first. Also, check the chain and tire condition to ensure stable operation after the modification.
In my years of riding experience, safety factors must be considered before removing the speed limiter. The Kawasaki 400's speed limiter is designed to protect beginners and comply with regulations—sudden removal may cause loss of control. Methods include ECU remapping or installing plug-ins, but I strongly recommend visiting an authorized service center. When making modifications, always test the brake system to ensure compatibility with higher speeds, and consider adding auxiliary lights for better visibility. In daily maintenance, the speed limiter actually reduces fatigue on long rides. If modifications are truly necessary, consult a technician to evaluate the bike's condition—don't ignore risks for momentary thrills.
