Minibikes
2005Polini 911 H2O
14 fields on record
The 2005 Polini 911 H2O is a lightweight sportminibike designed for young riders and beginners seeking an entry-level racing experience. Powered by a liquid-cooled two-stroke engine producing 6.2 horsepower, this compact machine weighs just 23 kg and excels in amateur competition and training environments. Known for its nimble handling and affordable performance package, it remains a popular choice for introducing riders to motorsport fundamentals.
- Capacity
- 39.7 ccm
- Engine
- Single, two-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 23.0 kg
- Seat height
- 455 mm
- Power
- 6.2 HP (4.6 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- This is a pit-bike style minibike built purely for playful mini-moto track days, backyard fun, and honing cornering technique at low cost and low risk.
- Built for
- Expect a buzzy, high-revving two-stroke character that rewards aggressive, playful riding despite its very modest outright power.
- Not ideal for
- This is not the bike for taller or heavier adults, highway commuting, touring, or anyone needing a passenger or genuine off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 39.7 ccm
- Power
- 6.2 HP (4.6 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.2696 HP/kg (dry)
- Bore x stroke
- 36.0 x 39.0 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
Transmission
- Clutch
- Dry with centrifugal counter weights
Dimensions & weight
- Seat height
- 455 mm
- Dry weight
- 23.0 kg
Chassis & suspension
- Frame
- Reinforced die cast light alloy
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Single disc
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Polini 911 H2O?
The 2005 Polini 911 H2O has a Capacity of 39.7 ccm (2.42 cubic inches).
What engine power does the Polini 911 H2O have?
The 2005 Polini 911 H2O has a Power of 6.2 HP (4.6 kW).
How much does the Polini 911 H2O weigh?
The 2005 Polini 911 H2O has a Dry weight of 23.0 kg (50.7 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.