The Honda Astrea Star marked a new era for modern underbone motorcycles.

                          The Honda Astrea Star marked a new era for modern underbone motorcycles.






The Honda Astrea Star was launched in 1985. It marked the beginning of a new era for modern underbone motorcycles with a sleeker design and new features such as CDI ignition and an electric starter. This motorcycle became a favorite among many due to its combination of design, performance, and practicality.

Engine Type: 4-stroke, single cylinder, SOHC, air-cooled, with a 80-degree angle from vertical
Bore x Stroke: 47 x 49.5 mm
Displacement (Cubic Capacity): 85.8cc
Compression Ratio: 9.2:1
Carburetor: Keihin 16mm x1
Claimed Peak Power: 6.8 HP at 8500 RPM
Clutch: Dual clutch system:

  • Crankshaft clutch: automatic centrifugal with friction shoes
  • Main shaft clutch: wet, multi-plate, operated by the gearshift pedal
    Transmission Gears: 4-speed constant mesh
    Gear Pattern: N-1-2-3-4-N (rotary system)
    Engine Oil Capacity: 750cc/0.75 liters for periodic change
    Starter Types: C800K3: Kick starter, C800M3: Kick starter and electric starter

Dimensions of Honda Astrea Star

  • Length: 1835mm
  • Width: 670mm
  • Height: 1025mm
  • Ground Clearance: 130mm
  • Seat Height: 750mm
  • Curb Weight: 84 kg (C800K3), 87 kg (C800M3)
  • Fuel Tank Capacity: 4 liters of gasoline

Frame and Suspension

  • Frame Type: Backbone
  • Front Suspension Type: Bottom Link, with a notable “snap” when the front brake is applied
  • Rear Suspension Type: Swingarm, shock absorber with 2-position adjustment

Tires and Brakes

  • Front Tire Size: 2.25-17 (4PR) Tube Type
  • Rear Tire Size: 2.50-17 (4PR) Tube Type
  • Front Brake: Drum brake, operated by steel cable
  • Rear Brake: Drum brake, operated by a pull rod

Electrical System

  • Battery: Wet 12V-4AH
  • Spark Plug: NGK C7HSA / Denso ND U22FS-U
  • Ignition System: CDI AC without points

This detailed specification highlights the innovative features and design of the Honda Astrea Star that contributed to its popularity during its time.

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