Minibikes
2010Polini XP 4 Street 50
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The 2010 Polini XP 4 Street 50 is a lightweight mini bike designed for beginner and young riders seeking nimble urban performance. Its air-cooled four-stroke engine and adjustable suspension deliver responsive handling and reliability on tight city streets and light off-road trails. Best known for affordable fun and easy maneuverability in crowded environments.
- Capacity
- 49.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Wet weight
- 68.0 kg
- Seat height
- 790 mm
- Power
- 5.4 HP (4.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It is built for playful, low-speed urban messing about and minibike track days rather than any serious speed or distance riding.
- Built for
- Expect a light, flickable, go-kart-like feel with sharp steering thanks to the small wheels and minimal weight, but very limited top speed from the 49cc air-cooled single.
- Not ideal for
- This is not for riders wanting highway capability, long-distance touring, passenger carrying, or genuine off-road adventure.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 49.0 ccm
- Power
- 5.4 HP (4.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0794 HP/kg (wet)
- Bore x stroke
- 39.0 x 41.0 mm
- Compression
- 9.5:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric & kick
- Ignition
- Electronic
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multidisc in oilbath
Dimensions & weight
- Wheelbase
- 1150 mm
- Seat height
- 790 mm
- Wet weight
- 68.0 kg
- Fuel capacity
- 3.00 litres
Chassis & suspension
- Front suspension
- Hydraulic fork 33mm
- Rear suspension
- Adjustable monoshock
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 200 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 150 mm
- Front tyre
- 3.50-10
- Rear tyre
- 3.50-10
Other
- Color options
- Balck/blue
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2008 | 2009 | 2010 |
|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc |
| Seat height | 790 mm | 790 mm | 790 mm |
| Fuel capacity | 3 L | 3 L | 3 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Polini XP 4 Street 50?
The 2010 Polini XP 4 Street 50 has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the Polini XP 4 Street 50 have?
The 2010 Polini XP 4 Street 50 has a Power of 5.4 HP (4.0 kW).
How many gears does the Polini XP 4 Street 50 have?
The 2010 Polini XP 4 Street 50 has a Gearbox of 4-speed.
How much does the Polini XP 4 Street 50 weigh?
The 2010 Polini XP 4 Street 50 has a Wet weight of 68.0 kg (149.9 pounds).
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