The Yamaha Byson FI motorcycle specifications include a 155 cc (9.46 cu in) engine, power of 12.9 hp (9.4 kW) @ 8,000 rpm, a 6-speed gearbox, and a listed weight of 133 kg (293.2 lb).
Key specifications
The 2017 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha Byson FI 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 76% lower than the Yamaha database average. Around the 23rd percentile across Yamaha models.
About 72% lower than the Yamaha database average. Around the 29th percentile across Yamaha models.
Very close to the Yamaha database average. Around the 49th percentile across Yamaha models.
About 8% smaller than the Yamaha database average. Around the 45th 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.
12.9 hp — more powerful than about 23% of Yamaha models with power data.
155 cc — larger displacement than about 29% of Yamaha models.
790 mm — taller than about 49% of Yamaha models.
12 L — larger than about 45% of Yamaha fuel tanks in this database.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
1,999
2,082
4% below average.
780
823
5% below average.
1,045
1,172
11% below average.
1,340
1,416
5% below average.
790
793
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 100/80-M17 |
|---|---|
| Rear tire size | 130/70-M17 |
| Power-to-weight ratio | 0.097 hp/kg |
| Power-to-weight | 97.0 hp/tonne |
| Specific power | 83.2 hp/L |
Model information
| Category | Naked bike |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 155 cc (9.46 cu in) |
| Power | 12.9 hp (9.4 kW) @ 8,000 rpm |
| Torque | 13.0 Nm (1.3 kgf-m or 9.6 ft.lbs) @ 6,000 rpm |
| Compression ratio | 9.5:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel system | Injection |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | TCI |
| Starter | Electric & kick |
| Lubrication | Wet |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet, manual clutch, multiplate |
Chassis and suspension
| Frame | Diamond |
|---|---|
| Front suspension | Telescopic |
| Rear suspension | Swing Arm |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 100/80-M17 |
| Rear tire | 130/70-M17 |
Dimensions and weight
| Dry weight | 133 kg (293.2 lb) |
|---|---|
| Seat height | 790 mm (31.1 inches) |
| Overall length | 1,999 mm (78.7 inches) |
| Overall width | 780 mm (30.7 inches) |
| Overall height | 1,045 mm (41.1 inches) |
| Wheelbase | 1,340 mm (52.8 inches) |
Fuel and emissions
| Fuel capacity | 12.00 L (3.17 US gal) |
|---|
Performance
| Power/weight ratio | 0.0969 hp/kg |
|---|
Electrical and instruments
| Electrical | GT24V YTZ4V battery. |
|---|
Other specifications
| Color options | Grey, gray/red |
|---|
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.