The Honda CB450 was the first "big" Honda motorcycle with a 444cc dual over head cam engine producing 43-45 bhp. Appearing first in the 1965 four-speed K0 model, and progressing through a series of KX models with various improvements and styling changes, most notably a redesigned petrol tank, with 5 – speed gearbox in 1968 K1 model. K0 models are often known as "Black Bomber" models in the U.S. and notable for their distinctive large, square gas tank. In Canada the K1 model was marketed as the “Hellcat”.
Although the CB450 never sold up to Honda's expectations, it had excellent engineering for the time, notably including reliable electrics, an electric starter, and a horizontally split crankcase, all features distinct from the British twins of the era. The most radical feature was the valve springing. Instead of the conventional coil spings it used Torsion bars - rods of steel that twisted to provide the spring effect.
Technical information;
Manufacturer - Honda
Model - Dream
Model year - 1965 – 1974
Successor - CB500
Class - Standard
Engine - 444cc DOHC straight twin
Top speed - 110 mph
Power - 43 bhp @ 8,500 rpm
Transmission - 4 or 5 speed gearbox
Suspension - Front; telescopic fork
- Rear; swingarm
Brakes - Drum, twin leading shoe
Weight - 186 kg