2010 Polini XP 4 Street 125 Technical Analysis & Specification Breakdown
Engineered by Polini for the super motard motorcycle segment, the 2010 Polini XP 4 Street 125 pairs a 120.7 cc (7.4 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 52.4 x 56.0 mm (2.1 x 2.2 inches) with a 9.5:1 compression ratio.
On the scales, the XP 4 Street 125 measures 68.5 kg (151 lbs) dry. Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,150 mm (45.3 in) wheelbase engineered for quick, flickable steering geometry. The 3-liter (0.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Polini archive, this model family spans 2 indexed model years from 2008 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
790 mm (31.1 in)
Engine
Displacement120.7 ccm (7.37 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression9.5:1
Bore x Stroke52.4 x 56.0 mm (2.1 x 2.2 inches)
Fuel SystemCarburettor. Mikuni 22
IgnitionElectronic
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchMultidisc in oilbath
Performance
ExhaustEuro 3
Chassis
Front SuspensionHydraulic fork
Rear SuspensionMonoshock, adjustable
Wheelbase1150 mm (45.3 inches)
Wheels & Brakes
Front Tyre3.50-10
Rear Tyre3.50-10
Front BrakesSingle disc
Front Brake Ø200 mm (7.9 inches)
Rear BrakesSingle disc
Rear Brake Ø150 mm (5.9 inches)
Dimensions & Weight
Dry Weight68.5 kg (151.0 pounds)
Seat Height790 mm (31.1 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.
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.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
