Positioned in Polini's minibike, sport motorcycle lineup, the 2007 Polini 911 GP4 Reverse Race features a 39.9 cc (2.4 cu in) single cylinder, two-stroke configuration. In factory specification, peak output is rated at 6.2 HP (4.5 kW). Internal engine geometry specifies a bore and stroke of 36.0 x 39.2 mm (1.4 x 1.5 inches).
On the scales, the 911 GP4 Reverse Race measures 22 kg (49 lbs) dry. Rider ergonomics and chassis geometry center around a 425 mm (16.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 2.2-liter (0.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
425 mm (16.7 in)
Engine
Displacement39.9 ccm (2.43 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power6.2 HP (4.5 kW))
Bore x Stroke36.0 x 39.2 mm (1.4 x 1.5 inches)
Fuel SystemCarburettor. PHGB 15
IgnitionElectronic
Transmission
ClutchDry with centrifuge counter weights
Chassis
Frame TypeLatticed tubular frame
Wheels & Brakes
Front Tyre90/65-R6.5
Rear Tyre110/50-R6.5
Front BrakesSingle disc
Front Brake Ø148 mm (5.8 inches)
Rear BrakesSingle disc
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Dry Weight22.0 kg (48.5 pounds)
Power/Weight0.2818 HP/kg
Seat Height425 mm (16.7 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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
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.
