The Yamaha DT 125 R motorcycle specifications include a 125 cc (7.63 cu in) engine, power of 12 hp (8.8 kW) @ 7,000 rpm, a 6-speed gearbox, and a listed weight of 119 kg (262.4 lb).
Key specifications
The 1991 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha DT 125 R compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 77% lower than the Yamaha database average. Around the 20th percentile across Yamaha models.
About 77% lower than the Yamaha database average. Around the 25th percentile across Yamaha models.
About 36% lighter than the Yamaha database average. Around the 20th percentile across Yamaha models.
About 23% smaller than the Yamaha database average. Around the 35th percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
12 hp — more powerful than about 20% of Yamaha models with power data.
125 cc — larger displacement than about 25% of Yamaha models.
119 kg — heavier than about 20% of Yamaha models, or lighter than about 80%.
10 L — larger than about 35% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 2.15-21 |
|---|---|
| Rear tire size | 4.10-18 |
| Power-to-weight ratio | 0.101 hp/kg |
| Power-to-weight | 100.8 hp/tonne |
| Specific power | 96.0 hp/L |
| Bore/stroke ratio | 1.10:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 125 cc (7.63 cu in) |
| Power | 12 hp (8.8 kW) @ 7,000 rpm |
| Bore × stroke | 56.0 x 50.7 mm (2.2 x 2.0 inches) |
| Compression ratio | 6.7:1 |
| Cooling system | Liquid |
| Fuel control | Membrane & power valve |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 2.15-21 |
| Rear tire | 4.10-18 |
Dimensions and weight
| Wet weight | 119 kg (262.4 lb) |
|---|
Fuel and emissions
| Fuel capacity | 10.00 L (2.64 US gal) |
|---|
Performance
| Top speed | 110.0 km/h (68.4 mph) |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.