What is the top speed of the Honda CB400F?
2 Answers
The top speed of the Honda CB400F is approximately 190 km/h. The engine, designed with 4 valves, keeps all valves operating even at low RPMs, which can be somewhat wasteful. The Hyper-VTEC design focuses on regulating valve operation. Taking a 4-cylinder, 16-valve engine as an example—where each cylinder has 2 intake valves and 2 exhaust valves—when the engine operates at a specified low RPM, only half of the valves are opened, i.e., 4 intake and 4 exhaust valves. Additional information about the Honda CB400 motorcycle is as follows: SF Engine: The SF engine enables agile and quick starts while maintaining a smooth and comfortable feel. When shifting from 5th to 6th gear, the second-generation model was set at 6300 RPM. Although this ensures a perfect transition for the final stage, it sacrifices acceleration. VTEC Third Generation: The VTEC third generation activates at 6750 RPM in 6th gear, meaning that when shifting from 5th to 6th gear, you should push the 5th gear RPM from 6000 to around 7000 before engaging 6th gear.
I've ridden the Honda CB400F several times, with a top speed reaching around 170 km/h, depending on road conditions and wind resistance. This motorcycle is equipped with a 399cc engine, offering quite exhilarating acceleration, but reaching its top speed from zero requires a stable road surface and suitable conditions. During actual rides, the bike's moderate weight provides decent stability at high speeds, though crosswinds can affect balance, so caution is needed. While speed is important, road speed limits are usually below 120 km/h, so it's safer not to push to the limit. If you're looking to enhance performance, choosing the right tires and regular engine maintenance can optimize performance, though the factory settings are already quite sufficient.
