Harley-Davidson SX125 Motorcycle - Street (1973-1978)

The Harley-Davidson SX125, produced by Harley-Davidson's Italian subsidiary Aermacchi, was a lightweight, two-stroke dual-sport motorcycle offered from 1973 to 1978. These bikes were largely rebadged Aermacchi models for the North American market. They featured an air-cooled, two-stroke, single-cylinder engine of 123 or 125 cc, typically paired with a 5-speed manual transmission. The primary model offered during this period was the Harley-Davidson SX125. In 1975, the Harley-Davidson SXT125 was introduced as a distinct variant, designed specifically as a trail bike. The SXT125 featured a slightly oversquare engine (56mm bore, 50mm stroke), piston-port induction, a chrome-plated bore, a 27mm Dell'Orto carburetor, and an oil injection system. Production of the SX family, including the 125cc models, concluded in 1978. FAQ:

Q: How can I ensure this part fits my Harley-Davidson SX125 or SXT125?

R: To guarantee compatibility, please use our year and model selector at the top of the page.

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