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Harley Davidson S-125

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The Harley Davidson S-125 was a Air-cooled, single cylinder Classic motorcycle produced by Harley Davidson in 1949.

Harley Davidson S-125
Production 1949
Class Classic
Air-cooled, single cylinder
Bore / Stroke 53.3mm x 53.3mm
Compression ratio 6.6:1
Fuel System Carburetor
Transmission Gear box: 3-Speed
Final Drive: Chain
Suspension Front: Girder fork
Rear: Rigid
Brakes Front: Drum
Rear: Drum
Front Tire 3.25-19
Rear Tire 3.25-19
Weight 91.0 kg (wet)
Manuals Service Manual



A 53.3mm bore x 53.3mm stroke result in a displacement of just 125.0 cubic centimeters.


The bike has a 3-Speed transmission.


It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Girder fork while the rear was equipped with a Rigid.

1949 Harley Davidson S-125Edit


The 1948 Harley Davidson S-125 is a classic machine designed by House Milwaukee as a fuel-efficient and economical machine for the years immediately after World War II. With a basic design, it had a single cylinder, 125cc engine that produce 3 horsepower. It features large, wire-spoke wheels, a single, coil-mounted seat, a single exhaust tube with a blacked-out muffler, a chain final drive, and a small headlight. In addition, for a small extra fee, it could be fitted with chromed wheels.