Positioned in MBK's scooter motorcycle lineup, the 2009 MBK Booster Naked utilizes a 49.2 cc (3 cu in) air-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 3.2 HP (2.3 kW) at 6,500 rpm while maximum torque reaches 3.6 Nm (2.7 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 7.2:1 compression ratio.
On the scales, the Booster Naked measures 82 kg (181 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 768 mm (30.2 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,172 mm (46.1 in) wheelbase engineered for quick, flickable steering geometry. The 5.3-liter (1.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's MBK archive, this model family spans 4 indexed model years from 2005 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power Band Window
6,000–6,500 rpm
Standover Height
768 mm (30.2 in)
Engine
Displacement49.2 ccm (3.00 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power3.2 HP (2.3 kW)) @ 6500 RPM
Torque3.6 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000 RPM
Compression7.2:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
LubricationSeparate lubrication
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic centrifugal
Chassis
Frame TypeSteel tube
Front SuspensionTelescopic fork
Front Travel70 mm (2.8 inches)
Rear SuspensionUnit swing
Rear Travel70 mm (2.8 inches)
Wheelbase1172 mm (46.1 inches)
Ground Clearance124 mm (4.9 inches)
Wheels & Brakes
Front Tyre120/90-10
Rear Tyre150/80-10
Front BrakesSingle disc
Front Brake Ø180 mm (7.1 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
Dimensions & Weight
Dry Weight267.0 kg (588.6 pounds)
Weight incl.82.0 kg (180.8 pounds)
Power/Weight0.0120 HP/kg
Seat Height768 mm (30.2 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
