The Yamaha DT 125 was an enduro motorcycle first released by Yamaha in 1974 under the DT 125A designation. The bike debuted in 1974 and continued production until 2008. The DT 125H was the last model dropped from production in the American market in 1981.
In 1978, the Japanese motorcycle manufacturer launched the Yamaha DT 125, a dual-purpose entry-level motorcycle with an electric start system that appealed to all users, whether on or off-road, at a simple touch of a button.
In the visual department, the 1978 motorcycle was identical to the previous model, wearing the same standard features, such as a one-piece dual seat, a round headlight up front, a Mono-Cross rear suspension system, a high-mounted exhaust system, and wire-spoke wheels.
The bike's suspension system comprised a telescopic fork on the front with 160 mm wheel travel and a Mono-Cross shock absorber on the rear with 115 mm travel, delivering optimum suspension performance and handling capabilities.
In the braking department, the bike's wheels were fitted with a drum braking unit both front and rear, delivering optimum stopping power.
As for power, the 1978 Yamaha DT 125E had its heartbeat set by a 123cc two-stroke air-cooled single-cylinder engine fed by a Mikuni carburetor, delivering 13 hp with maximum strength at 7,000 rpm and 14 Nm (10 lb-ft) torque at 6,500 rpm.