In essence, the Honda C90 was introduced as an upgraded version of the Honda C70 in 1978. Primarily deemed as falling under the scooter motorcycle category, the Honda C90 achieved immense popularity within local as well as international markets owing to its decent physical exterior, commendable engine schematics and substantial reliability from an overall perspective. The Honda C90 comprised of an OHC single cylinder (2 valves per cylinder) four stroke air cooled engine with a displacement rating of about 89 CC. Similarly, it had a bore value of 50 mm as well as a stroke value of 45.6 mm as well as maximum engine revolutions per minute rating of 10000.

On the other hand, according to the makers at Honda Motor Company, the Honda C90 had a compression ratio of 8.2 to 1 which was in line with its engine power. However, its engine had the ability to produce 7.50 Horse Power at 9500 revolutions per minute as well as engine torque of 0.67 N-M at about 6000 revolutions per minute. Similarly, in terms of the ignition unit, the Honda C90 was fitted with contact breaker points as well as a clutch unit that comprised of a Multi plate wet automatic component, an upgrade that was in line with recent technological advancements.

However, the Honda C90 had a 3 speed chain transmission gear box which was a disappointment since a 4 speed gearbox would have been more in line with its engine schematics. Nonetheless, the Honda C90 had a variety of other features that played a vital role in its universal acceptance as a high quality scooter class bike. Its frame was molded from pressed steel which accounted for its sturdiness as well as durability. On the other hand, the front suspension unit consisted of hydraulically dampened leading link forks in conjunction with a 3 inch travel component. Similarly, the rear suspension unit comprised of a hydraulically dampened compression spring coupled with a 3.8 inch travel.

Alternatively, drum brake units for the front as well as the rear tire were employed with measurements of 4.3 inches and 4.5 inches respectively. Lastly, one of the main reasons why the Honda C90 was so popular was also because of its excellent fuel mileage rating of 2.5 liters per 100 kilometers as well as the fact that technological advancements enabled it to reduce the amount of greenhouse gases emitted through its exhaust unit.

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