First introduced in 1973, the Yamaha DT 125 is an enduro motorcycle that has seen 1 variant through 1974. The engine is a two stroke, single cylinder. Peak output is rated at 17.3 hp.
About the Yamaha DT 125
Documented here are the full technical specifications for the Yamaha DT 125, a Enduro / Off-Road motorcycle with a production run from 1972 to 1978. Specification data includes engine type and displacement, maximum power and torque output, transmission details, frame construction, suspension travel front and rear, brake types and rotor dimensions, tyre sizes, and overall weight and dimension figures. Select a year above to view the complete spec sheet for that model year.
Yamaha DT 125 by Year
Spec Evolution
How key specs changed across production years.
No numeric spec data available for this model.
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Specification
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1972
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1974
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1976
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1977
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1978
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Engine Detail
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Two stroke, single cylinder | Two stroke, single cylinder | Two stroke, single cylinder | Two stroke, single cylinder, reed-valve | Two stroke, single cylinder, reed-valve |
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Fuel Capacity
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9.5 Litres / 2.5 US gal | 9.5 Litres / 2.5 US gal | 9.5 Litres / 2.5 US gal | 6.8 Litres / 1.8 gal ↓ | 6.8 Litres / 1.8 gal |
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Suspension - Rear
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Dual shocks | Dual shocks | Dual shocks | Monocross | Monocross |
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Compression Ratio
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6.9:1 | 6.9:1 | 6.9:1 | 7.2:1 ↑ | 7.2:1 |
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Transmission / Drive
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5 Speed | 5 Speed | 5 Speed | 6 Speed ↑ | 6 Speed |
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Fuel Induction
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Mikuni TS28SS Carburetor | Mikuni TS28SS Carburettor | Mikuni TS28SS Carburettor | Single 24 mm Mikuni carburettor ↓ | Single 24 mm Mikuni carburettor |
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Max Power
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12.9 kW / 17.3 hp @ 7000 rpm | 12.9 kW / 17.3 hp @ 7000 rpm | 12.9 kW / 17.3 hp @ 7000 rpm | 13 hp / 9.5 kW @ 7000 rpm ↑ | 13 hp / 9.5 kW @ 7000 rpm |
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Max Torque
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1.4 kgf-m / 10 lb-ft @ 7000 rpm | 1.4 kgf-m / 10 lb-ft @ 7000 rpm | 1.4 kgf-m / 10 lb-ft @ 7000 rpm | 9.8 lb-ft @ 6,500 rpm ↑ | 9.8 lb-ft @ 6,500 rpm |