The Yamaha XS 850 motorcycle specifications include a 826 cc (50.40 cu in) engine, power of 79 hp (57.7 kW) @ 8,500 rpm, a 5-speed gearbox, and a listed weight of 258 kg (568.8 lb).
Key specifications
Year-specific specification changes
How the Yamaha XS 850 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 48% higher than the Yamaha database average. Around the 73rd percentile across Yamaha models.
About 50% higher than the Yamaha database average. Around the 75th percentile across Yamaha models.
About 38% heavier than the Yamaha database average. Around the 82nd percentile across Yamaha models.
About 84% larger than the Yamaha database average. Around the 98th 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.
79 hp — more powerful than about 73% of Yamaha models with power data.
826 cc — larger displacement than about 75% of Yamaha models.
258 kg — heavier than about 82% of Yamaha models, or lighter than about 18%.
24 L — larger than about 98% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.25-19 |
|---|---|
| Rear tire size | 4.00-18 |
| Power-to-weight ratio | 0.306 hp/kg |
| Power-to-weight | 306.2 hp/tonne |
| Specific power | 95.6 hp/L |
| Bore/stroke ratio | 1.04:1 (Oversquare) |
Model information
| Category | Touring |
|---|
Engine specifications
| Engine type | In-line three, four-stroke |
|---|---|
| Displacement | 826 cc (50.40 cu in) |
| Power | 79 hp (57.7 kW) @ 8,500 rpm |
| Bore × stroke | 71.5 x 68.6 mm (2.8 x 2.7 inches) |
| Compression ratio | 9.2:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Shaft drive (cardan) (final drive) |
Brakes, wheels and tires
| Front brakes | Dual disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 3.25-19 |
| Rear tire | 4.00-18 |
Dimensions and weight
| Wet weight | 258 kg (568.8 lb) |
|---|
Fuel and emissions
| Fuel capacity | 24.00 L (6.34 US gal) |
|---|
Performance
| Top speed | 196.0 km/h (121.8 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.