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Yamaha BWs Naked - 2011 Specifications and Reviews

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Engine and Transmission Specifications

DrivelineV-belt automatic
Transmission type,final driveBelt
GearboxAutomatic
Cooling systemAir
Lubrication systemSeparate lubrication
IgnitionCDI
Bore x stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Compression7.2:1
Torque3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000
Power3.22
Engine typeSingle cylinder, two-stroke
Capacity:49.20 ccm (3.00 cubic inches)
 
 

CategoryScooter
Year2011
ModelYamaha BWs Naked

Brakes, suspension, Frame and wheels

Rear brakes diameter110 mm (4.3 inches)
Rear brakesExpanding brake (drum brake)
Front brakes diameter180 mm (7.1 inches)
Front brakesSingle disc
Rear tyre dimensions150/80-10
Front tyre dimensions120/90-10
Rear suspension travel70 mm (2.8 inches)
Rear suspensionUnit swing
Front suspension travel70 mm (2.8 inches)
Front suspensionTelescopic fork
Frame typeSteel

Physical measures and capacities

Fuel capacity5.30 litres (1.40 gallons)
Wheelbase1,172 mm (46.1 inches)
Ground clearance124 mm (4.9 inches)
Overall width675 mm (26.6 inches)
Overall length1,685 mm (66.3 inches)
Overall height1,049 mm (41.3 inches)
Seat height768 mm (30.2 inches) If adjustable, lowest setting.
Power/weight ratio0.0418 HP/kg
Weight incl. oil, gas, etc82.0 kg (180.8 pounds)
Dry weight77.0 kg (169.8 pounds)
 
 

Other specs

Factory warranty6 Month (Limited Factory Warranty)
LightDual 30W Krypton Multi-reflector Headlights and 21/5W Brake light
Rear tyre25/10-12
Front tyre25/8-12
Rear SuspensionSwing Arm, 7.1” w/ 5-way Preload Adjustment
Front SuspensionIndependent Double Wishbone, 6.3” w/ 5-way Preload Adjustment
ClutchEngine Braking
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemCarburettor. Mikuni 33mm BSR
Bore x Stroke83.0 x 64.5 mm (3.3 x 2.5 inches)
Compression9.2:1
ModelYamaha Bruin 350
Color optionsWhite, aluminum
StarterElectric & kick

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