Topik

This model was based on the 500cc Meguro K2, and had an OHV engine separately structured with its 4-speed transmission. The cylinder head was made of aluminum. It had an European style appearance and mechanism, and it adopted an left pedal for its rear brake, which was quite rare in those days.

It underwent a full model change after 4 years. It strengthened its power by adopting a newly designed frame that generated free maneuvering and an engine with a fuel injection system.

Its concept was more modern that that of SR. It was a true single sports bike that mounted a 608cc single cylinder engine that generated 5kgm maximum torque. The difference with 400, besides the engine, are double disc, oil cooler, etc.

An advanced model of the W1 series. It adopted a front double disc (first KAWASAKI to adopt one), a headlight with clearance lights, a kill-switch, a passing light, and a new meter.

This bike was the final model of the CB750FOUR series. It reinforced its torque characteristics at mid-low speed range by changing its valve timing and air cleaner. It also adopted a rear disc brake.

This model was temporarily out of production when the CB750FOUR-II was brought to the market, but was reborn as model K6. It had new colors and a new blinker buzzer sound.

It featured equipment such as the blinker buzzer, the dimmer switch which kept the light on when the switch was moved up and down, or a system that stopped the cell operation unless the gear was in neutral position.

It featured equipment such as the clearance lamp, pass switch, or helmet holders. It had improved its safety performance and usability.

It had an die-casting crankcase. The two-wire compulsory opening/closing carburetor softened the accelerator movement. The design of its tank and side cover was new, too.

It was the first HONDA model to have a double cradle frame, and the first mass-production bike to mount a 4-stroke OHC 4-cylinder engine. The overwhelming performance of the engine, along with its front wheel disc brake and the beautiful split dual exhaust that highlighted the 4-cylinder have made it become the eye-catching leader of the Japanese motorcycle.