Polini XP 4 Street 50 - 2010 Specifications and Reviews

The 2010 Polini XP 4 Street 50 is a lightweight super motard 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.

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Engine and Transmission Specifications

ClutchMultidisc in oilbath
Transmission type,final driveChain
Gearbox4-speed
Cooling systemAir
IgnitionElectronic
Fuel systemCarburettor. Mikuni 16
Bore x stroke39.0 x 41.0 mm (1.5 x 1.6 inches)
Compression9.5:1
Engine typeSingle cylinder, four-stroke
Capacity:49.00 ccm (2.99 cubic inches)

CategorySuper motard
Year2010
ModelPolini XP 4 Street 50
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter150 mm (5.9 inches)
Rear brakesSingle disc
Front brakes diameter200 mm (7.9 inches)
Front brakesSingle disc
Rear tyre dimensions3.50-10
Front tyre dimensions3.50-10
Rear suspensionAdjustable monoshock
Front suspensionHydraulic fork 33mm

Physical measures and capacities

Fuel capacity3.00 litres (0.79 gallons)
Wheelbase1,150 mm (45.3 inches)
Seat height790 mm (31.1 inches) If adjustable, lowest setting.
Dry weight68.0 kg (149.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBalck/blue
StarterElectric & kick

Performance Profile & Rider Fit

Best For

Track25%
City70%
Cornering55%
Daily Riding40%
Touring10%
Passenger10%

Rider Profile

Best ForThis tiny 50cc supermotard-styled minibike suits beginners, younger riders, or hobbyists looking for a fun low-stakes machine rather than experienced riders seeking real performance.
PurposeIt is built for playful, low-speed urban messing about and minibike track days rather than any serious speed or distance riding.
Rider FitIts very low seat height, tiny 68kg dry weight, and 10-inch wheels make it extremely easy to handle for smaller or lighter riders, though tall or heavy riders will feel cramped.
CharacterExpect 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 ForThis is not for riders wanting highway capability, long-distance touring, passenger carrying, or genuine off-road adventure.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2010 Polini XP 4 Street 50 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 790mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2010 Polini XP 4 Street 50, with a moderate knee angle of around 110 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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