The Yamaha R 3 motorcycle specifications include a 345 cc (21.05 cu in) engine, power of 36 hp (26.3 kW) @ 7,000 rpm, a 5-speed gearbox, and a listed weight of 154 kg (339.5 lb).
Key specifications
How the Yamaha R 3 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 32% lower than the Yamaha database average. Around the 47th percentile across Yamaha models.
About 37% lower than the Yamaha database average. Around the 42nd percentile across Yamaha models.
About 17% lighter than the Yamaha database average. Around the 39th percentile across Yamaha models.
About 15% larger than the Yamaha database average. Around the 61st 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.
36 hp — more powerful than about 47% of Yamaha models with power data.
345 cc — larger displacement than about 42% of Yamaha models.
154 kg — heavier than about 39% of Yamaha models, or lighter than about 61%.
15 L — larger than about 61% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.00-18 |
|---|---|
| Rear tire size | 3.50-18 |
| Power-to-weight ratio | 0.234 hp/kg |
| Power-to-weight | 233.8 hp/tonne |
| Specific power | 104.3 hp/L |
| Bore/stroke ratio | 1.03:1 (Oversquare) |
Model information
| Year released | 1970 |
|---|
Engine specifications
| Engine type | Twin, two-stroke |
|---|---|
| Displacement | 345 cc (21.05 cu in) |
| Power | 36 hp (26.3 kW) @ 7,000 rpm |
| Bore × stroke | 61.0 x 59 mm (2.4 x 2.3 inches) |
| Compression ratio | 7.5:1 |
| Cooling system | Air |
| Fuel control | Port control |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Expanding brake |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 3.00-18 |
| Rear tire | 3.50-18 |
Dimensions and weight
| Wet weight | 154 kg (339.5 lb) |
|---|
Fuel and emissions
| Fuel capacity | 15.00 L (3.96 US gal) |
|---|
Performance
| Top speed | 165.0 km/h (102.5 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.