YAMAHA GX 250 (1978-1979) Specs, Performance & Photos

The Yamaha GX 250, also known as the XS 250 in other markets, was a middle-class motorcycle introduced by Yamaha in 1977 as the first 250cc four-stroke model, alongside its bigger brother, the GX 400 version.

Compared to its larger sibling, the GX 250 was identical, with only minor differences, including the rear wheel size, which was slightly smaller, as well as the engine displacement, which was 150cc smaller.

Visually, the bike was identical to the larger model, packing standard features, such as a round headlight with instruments mounted on top, a square fuel tank, a one-piece dual seat, side-mounted rear shocks, a dual exhaust system, a side stand, and a wire-spoke wheels.

The bike's suspension system comprised a telescopic fork on the front, and dual-side mounted shock absorbers on the rear, delivering optimum suspension performance and handling.

The braking power was achieved by a single brake disc on the front wheel and a single disc on the rear wheel, providing optimum stopping power.

As for the power figures, the 1978 Yamaha GX 250 had its soul brought to life by a 248cc four-stroke air-cooled parallel-twin engine mounted underneath the fuel tank, delivering 25 hp with maximum strength at 9,500 rpm and 19 Nm (14 lb-ft) torque at 8,500 rpm.

The small motorcycle was driven by a six-speed gearbox with a wet multi-disc manual clutch. The rear wheel was linked to the transmission with a final chain drive.