At the heart of the 2005 MBK Nitro scooter motorcycle, MBK pairs a 49 cc (3 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 2.7 HP (2 kW) at 6,500 rpm while maximum torque reaches 3.7 Nm (2.7 lb-ft) at 4,500 rpm. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 7.4:1 compression ratio.
On the scales, the Nitro measures 92 kg (203 lbs) dry. Rider ergonomics and chassis geometry center around a 828 mm (32.6 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,256 mm (49.4 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 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
4,500–6,500 rpm
Standover Height
828 mm (32.6 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsIn-line six, two-stroke
Power2.7 HP (2.0 kW)) @ 6500 RPM
Torque3.7 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 4500 RPM
Compression7.4:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
IgnitionElectronic (C.D.I.)
LubricationSeparate lubrication
CoolingLiquid
Transmission
ClutchAutomatic centrifugal
Chassis
Front SuspensionHydraulic and telescopic fork
Rear SuspensionHydraulic unit swing
Wheelbase1256 mm (49.4 inches)
Ground Clearance185 mm (7.3 inches)
Wheels & Brakes
Front Tyre130/60-13
Rear Tyre140/60-13
Front BrakesSingle disc
Front Brake Ø190 mm (7.5 inches)
Rear BrakesSingle disc
Rear Brake Ø190 mm (7.5 inches)
Dimensions & Weight
Dry Weight92.0 kg (202.8 pounds)
Power/Weight0.0291 HP/kg
Seat Height828 mm (32.6 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.
