The Yamaha XS 650 motorcycle specifications include a 654 cc (39.91 cu in) engine, power of 50 hp (36.5 kW) @ 6,800 rpm, a 5-speed gearbox, and a listed weight of 227 kg (500.4 lb).
Key specifications
The 1975 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha XS 650 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 6% lower than the Yamaha database average. Around the 60th percentile across Yamaha models.
About 19% higher than the Yamaha database average. Around the 66th percentile across Yamaha models.
About 22% heavier than the Yamaha database average. Around the 74th 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.
50 hp — more powerful than about 60% of Yamaha models with power data.
654 cc — larger displacement than about 66% of Yamaha models.
227 kg — heavier than about 74% of Yamaha models, or lighter than about 26%.
15 L — larger than about 61% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.50-19 |
|---|---|
| Rear tire size | 4.00-18 |
| Power-to-weight ratio | 0.220 hp/kg |
| Power-to-weight | 220.3 hp/tonne |
| Specific power | 76.5 hp/L |
| Bore/stroke ratio | 1.01:1 (Square) |
Model information
| Category | Classic |
|---|
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 654 cc (39.91 cu in) |
| Power | 50 hp (36.5 kW) @ 6,800 rpm |
| Bore × stroke | 75.0 x 74 mm (3.0 x 2.9 inches) |
| Compression ratio | 8.4:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel control | Overhead Cams (OHC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Dual disc |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 3.50-19 |
| Rear tire | 4.00-18 |
Dimensions and weight
| Wet weight | 227 kg (500.4 lb) |
|---|
Fuel and emissions
| Fuel capacity | 15.00 L (3.96 US gal) |
|---|
Performance
| Top speed | 181.0 km/h (112.5 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.