Yamaha has built the BWs, a scooter, across 1 variant since 2011. Displacement comes in at 49.00 cc.
About the Yamaha BWs
Documented here are the full technical specifications for the Yamaha BWs, a Scooter motorcycle with a production run from 2006 to 2012. Specification data includes engine type and displacement, maximum power and torque output, transmission details, frame construction, suspension travel front and rear, brake types and rotor dimensions, tyre sizes, and overall weight and dimension figures. Select a year above to view the complete spec sheet for that model year.
Yamaha BWs by Year
Spec Evolution
How key specs changed across production years.
No numeric spec data available for this model.
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Specification
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2006
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2007
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2008
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2009
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2010
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2011
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2012
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Fuel Control
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- | - | - | - | - | SOHC | Single Overhead Cams (SOHC) |
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Engine Type
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Single cylinder | Single cylinder | Single cylinder | Single cylinder | Single cylinder, two-stroke | Single cylinder, two-stroke | Single cylinder, two-stroke |
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Displacement (ci)
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2.99 cubic inches | 2.99 cubic inches | 3.00 cubic inches | 3.00 cubic inches | 3.00 cubic inches | 3.00 cubic inches | 3.00 cubic inches |
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Displacement (cc)
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49.00 cc | 49.00 cc | 49.20 cc ↑ | 49.20 cc | 49.20 cc | 49.20 cc | 49.20 cc |
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Bore x Stroke (mm)
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67.0 x 55.7 mm | 40.0 x 39.2 mm ↓ | - | 40.0 x 39.2 mm | 40.0 x 39.2 mm | 40.0 x 39.2 mm | 40.0 x 39.2 mm |
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Bore x Stroke (in,)
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2.6 x 2.2 inches | 1.6 x 1.5 inches ↓ | - | 1.6 x 1.5 inches | 1.6 x 1.5 inches | 1.6 x 1.5 inches | 1.6 x 1.5 inches |
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Frame Type
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Front suspension system | - | - | - | - | Steel | - |
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Dry Weight
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75 kg / 165.3 lbs | 75 kg / 165.3 lbs | 75 kg / 165.3 lbs | - | - | 230 kg / 507.0 lbs | - |
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Suspension - Front
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Hydraulic and telescopic fork | Hydraulic and telescopic fork | Hydraulic and telescopic fork | Telescopic fork | Telescopic fork | Telescopic fork | Telescopic fork |
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Suspension - Rear
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Hydraulic unit swing | Hydraulic unit swing | Hydraulic unit swing | Unit swing | Unit swing | Unit swing | Unit swing |
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Fuel System
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- | Carburettor. Gurtner PY-12 | - | Carburettor | - | Carburettor | Carburettor. Gurtner |
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Colours
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- | - | - | - | Black, white, blue | Black, white, blue | Black, white, red |
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Clutch
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Automatic centrifugal | Automatic centrifugal | - | - | - | Engine Braking | - |
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Final Drive
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Chain | - | - | Belt | Belt | Belt | Belt |
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Height
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1,051 mm / 41.4 in. | 1,049 mm / 41.3 in. | 1,049 mm / 41.3 in. | 1,049 mm / 41.3 in. | 1,049 mm / 41.3 in. | 1,049 mm / 41.3 in. | 1,049 mm / 41.3 in. |
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Engine Lubrication
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Seperate lubrification | - | Wet sump | Separate lubrication | Separate lubrication | Separate lubrication | Separate lubrication |
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Gearbox
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5-speed | Automatic | - | Automatic | Automatic | Automatic | Automatic |
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Width
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754 mm / 29.7 in. | 675 mm / 26.6 in. ↓ | 675 mm / 26.6 in. | 675 mm / 26.6 in. | 675 mm / 26.6 in. | 1,085 mm / 42.7 in. ↓ | 675 mm / 26.6 in. ↑ |
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Primary Drive
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- | - | - | - | - | 2WD; Yamaha Ultramatic® V-Belt / Forward, Neut.,Rev. | Yamaha On-Command pushbutton; 3-way locking differential; 2WD, 4WD, locked 4WD; shaft drive ↑ |
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Lighting system
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- | - | - | - | - | Dual 30W Krypton Multi-reflector Headlights and 21/5W Brake light | Dual 30W Krypton multireflector headlights and 21/5W brakelight |
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Wheel Travel - Front
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- | - | - | 70 mm / 2.8 in. | 70 mm / 2.8 in. | 70 mm / 2.8 in. | 70 mm / 2.8 in. |
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Wheel Travel - Rear
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- | - | - | 70 mm / 2.8 in. | 70 mm / 2.8 in. | 70 mm / 2.8 in. | 193 mm / 7.6 in. ↑ |
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Ignition
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Electronic (C.D.I.) | CDI | CDI | CDI | CDI | CDI | CDI |
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Max Torque
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3.60 | 3.60 | 3.60 | 3.60 | 3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000 | 3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000 | 3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000 |
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Power-to-Weight Ratio
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0.0428 HP/kg | 0.0357 HP/kg | 0.0428 HP/kg | - | - | - | - |
Yamaha BWs Competitors
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