Built around Polini's minibike, sport motorcycle platform, the 2005 Polini 911 H2O pairs a 39.7 cc (2.4 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 6.2 HP (4.5 kW). Internal engine geometry specifies a bore and stroke of 36.0 x 39.0 mm (1.4 x 1.5 inches).
On the scales, the 911 H2O measures 23 kg (51 lbs) dry. Rider ergonomics and chassis geometry center around a 455 mm (17.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops.
Standover Height
455 mm (17.9 in)
Engine
Displacement39.7 ccm (2.42 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power6.2 HP (4.5 kW))
Bore x Stroke36.0 x 39.0 mm (1.4 x 1.5 inches)
Fuel SystemCarburettor
CoolingLiquid
Transmission
ClutchDry with centrifugal counter weights
Chassis
Frame TypeReinforced die cast light alloy
Wheels & Brakes
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight23.0 kg (50.7 pounds)
Power/Weight0.2696 HP/kg
Seat Height455 mm (17.9 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.
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.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
