The Yamaha RD 250 (5-speed) motorcycle specifications include a 247 cc (15.07 cu in) engine, power of 30 hp (21.9 kW) @ 7,500 rpm, a 5-speed gearbox, and a listed weight of 162 kg (357.1 lb).
Key specifications
The 1973 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha RD 250 (5-speed) 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 44% lower than the Yamaha database average. Around the 44th percentile across Yamaha models.
About 55% lower than the Yamaha database average. Around the 32nd percentile across Yamaha models.
About 13% lighter than the Yamaha database average. Around the 41st percentile across Yamaha models.
About 23% larger than the Yamaha database average. Around the 67th 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.
30 hp — more powerful than about 44% of Yamaha models with power data.
247 cc — larger displacement than about 32% of Yamaha models.
162 kg — heavier than about 41% of Yamaha models, or lighter than about 59%.
16 L — larger than about 67% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.00-18 |
|---|---|
| Rear tire size | 3.25-18 |
| Power-to-weight ratio | 0.185 hp/kg |
| Power-to-weight | 185.2 hp/tonne |
| Specific power | 121.5 hp/L |
| Bore/stroke ratio | 1.00:1 (Square) |
Model information
| Category | Allround |
|---|
Engine specifications
| Engine type | Twin, two-stroke |
|---|---|
| Displacement | 247 cc (15.07 cu in) |
| Power | 30 hp (21.9 kW) @ 7,500 rpm |
| Bore × stroke | 54.0 x 54 mm (2.1 x 2.1 inches) |
| Compression ratio | 6.7:1 |
| Cooling system | Air |
| Fuel control | Membrane |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 3.00-18 |
| Rear tire | 3.25-18 |
Dimensions and weight
| Wet weight | 162 kg (357.1 lb) |
|---|
Fuel and emissions
| Fuel capacity | 16.00 L (4.23 US gal) |
|---|
Performance
| Top speed | 155.0 km/h (96.3 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.