The Yamaha BWs Naked motorcycle specifications include a 49 cc (2.99 cu in) engine, a 5-speed gearbox, and a listed weight of 75 kg (165.3 lb).
Key specifications
The 2006 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha BWs Naked 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 91% lower than the Yamaha database average. Around the 5th percentile across Yamaha models.
Very close to the Yamaha database average. Around the 31st percentile across Yamaha models.
About 59% smaller than the Yamaha database average. Around the 9th percentile across Yamaha models.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
1,685
2,082
19% below average.
754
823
8% below average.
1,051
1,172
10% below average.
1,172
1,416
17% below average.
768
793
3% below average.
124
181
31% below average.
Mechanical overview
Additional useful specifications
| Front tire size | 120/90-10 |
|---|---|
| Rear tire size | 150/80-10 |
| Front tire width | 120 mm |
| Front tire aspect ratio | 90% |
| Front rim diameter | 10 in |
| Rear tire width | 150 mm |
| Rear tire aspect ratio | 80% |
| Rear rim diameter | 10 in |
| Bore/stroke ratio | 1.02:1 (Square) |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 49 cc (2.99 cu in) |
| Torque | 3.6 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6,000 rpm |
| Bore × stroke | 40.0 x 39.2 mm (1.6 x 1.5 inches) |
| Compression ratio | 7.2:1 |
| Cooling system | Air |
| Ignition | Electronic (C.D.I.) |
| Starter | Electric & kick |
| Lubrication | Seperate lubrification |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Automatic centrifugal |
Chassis and suspension
| Frame | Front suspension system |
|---|---|
| Front suspension | Hydraulic and telescopic fork | system |
| Rear suspension | Hydraulic unit swing |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 120/90-10 |
| Rear tire | 150/80-10 |
Dimensions and weight
| Dry weight | 75 kg (165.3 lb) |
|---|---|
| Seat height | 768 mm (30.2 inches) |
| Overall length | 1,685 mm (66.3 inches) |
| Overall width | 754 mm (29.7 inches) |
| Overall height | 1,051 mm (41.4 inches) |
| Wheelbase | 1,172 mm (46.1 inches) |
| Ground clearance | 124 mm (4.9 inches) |
Fuel and emissions
| Fuel capacity | 5.30 L (1.40 US gal) |
|---|
Performance
| Power/weight ratio | 0.0428 hp/kg |
|---|
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.