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Motorcycles Specs > Honda > Honda C90 K3

Honda C90 K3 similar models

Honda C90 K3 Specs

The Honda C90 K3 model is a Scooter bike manufactured by Honda . In this version sold from year 1978 , the dry weight is 85.0 kg (187.4 pounds) and it is equiped with a Single cylinder, four-stroke motor. The engine produces a maximum peak output power of 7.50 HP (5.5 kW) @ 9500 RPM and a maximum torque of 0.67 Nm (0.1 kgf-m or 0.5 ft.lbs) @ 6000 RPM . With this drive-train, the Honda C90 K3 is capable of reaching a maximum top speed of 80.0 km/h (49.7 mph) . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Honda C90 K3 have a pressed steel monoque with engine part of loadbearing frame with front suspension being hydraulically dampened leading link forks and in the rear suspension it is equiped with hydraulically dampened with compression spring . Stock tire sizes are  on the front, and  on the rear. As for stopping power, the Honda C90 K3 braking system includes Expanding brake (drum brake). twin expanding shoe size 110 mm (4.3 inches) at the front and Expanding brake (drum brake). twin expanding shoe size 110 mm (4.3 inches) at the rear. 

Honda C90 K3 General Information

Brand Honda 
Model Honda C90 K3 
Year 1978 
Year 1978 
Category Scooter 
Factory Warranty (Years / miles)  

Honda C90 K3 Dimensions, Aerodynamics and weight

Frame type pressed steel monoque with engine part of loadbearing 
Seat details  
Wheelbase 1,190 mm (46.9 inches) 
Length 1,830 mm (72.0 inches) 
Width 640 mm (25.2 inches) 
Height 995 mm (39.2 inches) 
Seat Height 790 mm (31.1 inches) If adjustable, lowest setting. 
Alternate Seat Height  
Ground Clearance 130 mm (5.1 inches) 
Trail size 75 mm (3.0 inches) 
Wheels details  
Front Tyres - Rims dimensions  
Rear Tyres - Rims dimensions  
Front brakes Expanding brake (drum brake). twin expanding shoe 
Rear brakes Expanding brake (drum brake). twin expanding shoe 
Front Brakes Dimensions - Disc Dimensions 110 mm (4.3 inches) 
Rear Brakes Dimensions - Disc Dimensions 110 mm (4.3 inches) 
Curb Weight (including fluids) 91.6 kg (201.9 pounds) 
Dry Weight 85.0 kg (187.4 pounds) 
Front Percentage of Weight 40.0 
Rear Percentage of Weight 60.0 
Weight-Power Output Ratio : 0.0882 HP/kg 
Fuel Tank Capacity 5.50 litres (1.45 gallons) 
Reserve Fuel Capacity 1.00 litres (0.26 gallons) 
Carrying Details and Capacity  
Front Suspension hydraulically dampened leading link forks 
Front Suspension Travel 75 mm (3.0 inches) 
Rear Suspension hydraulically dampened with compression spring 
Rear Suspension Travel 100 mm (3.9 inches) 

Honda C90 K3 Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, four-stroke 
Engine details  
Fuel system Carburettor. keihin seiki 
Engine size - Displacement - Engine capacity 89.00 ccm (5.43 cubic inches) 
Bore x Stroke 50.0 x 45.6 mm (2.0 x 1.8 inches) 
Compression Ratio 8.2:1 
Number of valves per cylinder
Camshaft Valvetrain Configuration OHC 
Maximum power - Output - Horsepower 7.50 HP (5.5 kW) @ 9500 RPM 
Maximum torque 0.67 Nm (0.1 kgf-m or 0.5 ft.lbs) @ 6000 RPM 
Engine Maximum RPM 10000 
Cooling system Air 
Lubrication system wet sump 
Engine oil capacity  
Exhaust system sinle stainless steel pipe 
Gearbox 3-speed 
Transmission type, final drive ratio Chain 
Clutch type multi plate wet automatic 

Honda C90 K3 Performance

Top Speed 80.0 km/h (49.7 mph) 
Acceleration 0 to 100 km/h (0 to 62 mph)  
Acceleration 0 to 400m (1/4 mile)  
Recuperation 60 to 140 km/h in highest gear  
Fuel Consumption - MPG - Economy - Efficiency 2.50 litres/100 km (40.0 km/l or 94.09 mpg) 
CO2 emissions 58.0 CO2 g/km. (CO2 - Carbon dioxide emission) 

Honda C90 K3 Electrical Systems, Ignition and Equipment

Ignition Type contact breaker points 
Electrical Details  
Starter Type Kick