Segment: Enduro/Offroad
Production years: 1980, 1981
In 1980, the Japanese motorcycle manufacturer launched the Yamaha DT 125MX, a dual-purpose motorcycle with a moto-crosser style, delivering the comfort and manoeuvrability of a first-class roadster.
The Yamaha DT 125 was an enduro motorcycle that debuted in 1974 as the DT 125A. The DT suffix indicated a two-stroke off-road-style design with features such as a raised exhaust system, a cross members handlebar, universal tires, and enough ground clearance.
In the visual department, the bike was fitted with standard features, such as a round headlight up front with two instrument gauges mounted on top, a high-mounted front fender, a one-piece dual seat, a side stand, and wire-spoke wheels with mixed tires.
The bike was built around a tubular semi-double-cradle steel frame with a telescopic fork on the front, delivering 160 mm of travel, and a Mono-Cross suspension system on the rear, providing 115 mm of travel.
The braking performance was still handled by a drum braking unit on both front and rear wheels, like on previous models, delivering optimum stopping power.
In the performance department, the 1980 Yamaha DT 125MX had installed a 123cc four-stroke air-cooled single-cylinder engine that delivered an output power of 14 hp with a peak force at 6,500 rpm and 15 Nm (11 lb-ft) torque at 6,000 rpm.
The power produced by the engine was transferred to a six-speed manual transmission with a wet multi-plate clutch, spinning the rear wheel through a final chain drive, reaching a top speed of 119 kph (74 mph).
engine specs | Type: | Single cylinder, two stroke, air-cooled | Displacement: | 123 cm3 | Bore X Stroke: | 2.2x2.0 in OR 56 mm | Compression Ratio: | 7.2:1 | Horsepower: | 14/6500 KW(hp)/RPM | Torque: | 11/6000 lb-ft/RPM OR 15/6000 Nm/RPM | Fuel System: | Carburetor VM-22 |
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transmission specs | Gearbox: | 6-Speed | Clutch: | Wet multi-plate | Primary Drive: | - | Final Drive: | Chain |
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chassis specs | Frame: | Semi double tubular cradle | Front Suspension: | Light spring hydraulic dampers | Rear Suspension: | Light spring hydraulic dampers | Front Brake: | Drum | Rear Brake: | Drum |
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dimension specs | Overall Length: | 81.9 in OR 2080 mm | Overall Width: | 34.8 in OR 884 mm | Seat Height: | 33.7 in OR 856 mm | Wheelbase: | 53.1 in OR 1349 mm | Ground Clearance: | 10.4 in OR 264 mm | Weight: | 247 lbs OR 112 kg | Fuel Capacity: | 1.8 gallons OR 6.8 L |
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tyres specs | Front: | 2.75-21-4PR | Rear: | 3.50-18-4PR |
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power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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