Honda CB125

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Honda CB125.jpg
1975 Honda CB125S
Manufacturer Honda
Production 1969-1985
Engine 122–124 cc (7.4–7.6 cu in) air-cooled 4-stroke OHC 2-valve single, wet sump
Bore / stroke 2.205 inches (56.0 mm) * 1.949 inches (49.5 mm)
Transmission 5-speed, chain drive
Brakes Drum

The Honda CB125 was a 122 cc (7.4 cu in) motorcycle made by Honda from 1971-1975 (1973-1985 in the US). It had an overhead camshaft (OHC) engine with a 9500 rpm redline. The "S" model was produced from 1971 to 1975 and was replaced in 1976 by the "J" model (the US bikes retained the S designation). The newer model sported a two piece head, 124 cc (7.6 cu in) displacement, and a larger carburetor.[citation needed]

Major changes[edit]

Aside from different color schemes and minor lettering differences, these are some of the major design changes:

  • 1973 - First year the bike was released in the US as CB125S0.
  • 1974 - Front drum brake changed to disk, tachometer was added.
  • 1976 - Engine displacement increased from 122 to 124 cc (7.4 to 7.6 cu in), tachometer was eliminated.
  • 1979 - Front disk brake was changed back to drum.
  • 1980 - Point ignition was changed to capacitive discharge.
  • 1983 - The bike was not produced this year.
  • 1984 - The electrical system was changed from 6 to 12 volts.
  • 1985 - The last year the bike was released in the US, headlight shape was changed from round to rectangular.