Yamaha Bws 12 Inch - 2012 Specifications and Reviews

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General information

Year2012

Engine and Transmission Specifications

ClutchAutomatic centrifugal
Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
Lubrication systemSeperate lubrification
IgnitionElectronic (C.D.I.)
Bore x stroke67.0 x 55.7 mm (2.6 x 2.2 inches)
Compression7.2:1
Torque3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000
Power3.21
Engine typeSingle cylinder, two-stroke
Capacity:49.00 ccm (2.99 cubic inches)
 
 

CategoryScooter
ModelYamaha BWs 12 inch

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 dimensions130/70-12
Front tyre dimensions120/70-12
Rear suspensionHydraulic unit swing
Front suspensionHydraulic and telescopic fork
Frame typeFront suspension system

Physical measures and capacities

Fuel capacity5.30 litres (1.40 gallons)
Wheelbase1,172 mm (46.1 inches)
Ground clearance124 mm (4.9 inches)
Overall width754 mm (29.7 inches)
Overall length1,685 mm (66.3 inches)
Overall height1,051 mm (41.4 inches)
Seat height768 mm (30.2 inches) If adjustable, lowest setting.
Power/weight ratio0.0428 HP/kg
Dry weight75.0 kg (165.3 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric & kick

Performance Profile & Rider Fit

3.2 hp
Peak Power

Best For

Track5%
City88%
Cornering40%
Daily Riding75%
Touring12%
Passenger30%

Rider Profile

Best ForThis is an ideal first powered two-wheeler, suited to complete beginners and commuters with minimal riding experience.
PurposeBuilt purely for short urban hops, errands, and light commuting rather than any kind of performance or distance riding.
Rider FitIts low seat height, light 83kg weight, and automatic transmission make it extremely easy and unintimidating for riders of nearly any size or strength.
CharacterA cheerful, no-fuss small-wheel scooter that prioritizes simplicity, low running costs, and effortless maneuverability over speed or excitement.
Not Ideal ForThis is not the right machine for highway travel, long-distance touring, carrying a passenger comfortably, or anyone seeking real performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 768mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2012 Yamaha Bws 12 Inch, with a moderate knee angle of around 95 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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