Honda Trailsport ST90 Motorcycles


1973 Trailsport 90 (ST90K0)

Engine

Engine Type The engine was a 89cc single cylinder with a 3-speed transmission and an automatic clutch
Spark plug D6HA
Plug gap .028
Battery 6N5.5-1D — 6 volt

DRIVETRAIN

Drive chain #428 x 94
Front sprocket 15 T
Rear sprocket 40 T

CHASSIS / SUSPENSION / BRAKES

N/A

DIMENSION

N/A

OTHER

Colors
  • Tahitian Red
  • Mighty Green
  • The “HONDA” was yellow-orange with a black outline
  • There was a cylindrical tool box behind the seat
  • The headlight nacelle (shell) was black and the shock springs were chrome
  • The serial number began ST90-1000002.

1974 Trailsport 90 (ST90K1)

 

Engine

Engine Type The engine was a 89cc single cylinder with a 3-speed transmission and an automatic clutch
Spark plug D6HA
Plug gap .028
Battery 6N5.5-1D — 6 volt

DRIVETRAIN

Drive chain #428 x 94
Front sprocket 15 T
Rear sprocket 40 T

CHASSIS / SUSPENSION / BRAKES

N/A

DIMENSION

N/A

OTHER

  • It came in only one color: Bright Yellow
  • The “HONDA” decal was yellow with a black outline
  • The stripe was black and orange
  • There was a cylindrical tool box behind the seat
  • The headlight nacelle (shell) was black and the shock springs were chrome
  • The serial number began ST90-1100001.

1975 Trailsport 90 (ST90K2)

Engine

Engine Type The engine was a 89cc single cylinder with a 3-speed transmission and an automatic clutch
Spark plug D6HA
Plug gap .028
Battery 6N5.5-1D — 6 volt

DRIVETRAIN

Drive chain #428 x 94
Front sprocket 15 T
Rear sprocket 40 T

CHASSIS / SUSPENSION / BRAKES

N/A

DIMENSION

N/A

OTHER

Colors Candy Topaz Orange
  • The “HONDA” decal was yellow with a black background
  • There was a cylindrical tool box behind the seat.
  • The headlight nacelle (shell) was now orange instead of black and the shock springs were black instead of chrome
  • The serial number began ST90-1200004.

ST90 Image Gallery

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