HONDA CB400SF (Super Four) ข้อมูลจำเพาะ

400 Naked bestseller model CB 400 The superfore is a minor change.The biggest change is fuel injection fuel injection, combining a new all-stainless steel muffler with a built-in catalyzer at the collecting part of the exhaust pipe, in compliance with the new exhaust gas regulation, at the same time, the startability, the stability of the And ring, Throttle response is also improved.The size of the silencer itself was also increased and quietness was improved.Hyper VTEC that selectively uses 2 valves and 4 valves according to the engine speed is based on the specification 3 so far with the switching point of 2 valve -> 4 valve set to 6300 revolution at 1st to 5th speed and 6,750rd at 6th speed , Evolved to Hyper VTEC ・ Revo which newly adds accelerator opening to control item.Even if it exceeds 6300 rpm at 1st to 5th speed, if the accelerator opening degree is less than a certain value, 2 valves are maintained up to 6750 rpm.Switching to 4 valve operation instantaneously when the accelerator opening degree becomes equal to or more than a certain amount even at 6300 rpm or less.At the 6th speed, it is controlled to switch to 4 valves at 6750 rpm regardless of the accelerator opening.It balances fuel efficiency and acceleration performance at a high level.