These are the known mechanical and performance specifications for your 2010 Polini X1P Air.
Basic Specs

Engine
Displacement49.30 ccm (3.01 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression14.0:1
Bore/Stroke40.0 x 39.3 mm (1.6 x 1.5 inches)
Valves/Cylinder
FuelingCarburettor. Dell Orto PHBN 14
IgnitionElectronic
Exhaust
Lubrication
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity3.00 litres (0.79 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front SuspensionPaioli, 33 mm
Front Travel
Rear SuspensionPaioli monoshock
Rear Travel
Seat
Seat Height600 mm (23.6 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase900 mm (35.4 inches)
Dry Weight42.0 kg (92.6 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre2.50-10
Rear Tire/Tyre2.75-10
Front BrakesExpanding brake (drum brake). Hydraulic
Front Brake Diameter150 mm (5.9 inches)
Rear BrakesExpanding brake (drum brake). Hydraulic
Rear Brake Diameter130 mm (5.1 inches)
Wheels
Comments
Also available with water cooling.