2005 Factory Bike Phantom R 12 Agua Technical Analysis & Specification Breakdown
At the heart of the 2005 Factory Bike Phantom R 12 Agua minibike, cross motorcycle, Factory Bike utilizes a 49.8 cc (3 cu in) liquid-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 11 HP (8 kW), transferring power to the rear wheel through a automatic gearbox and chain final drive. Internal engine geometry specifies a bore and stroke of 39.0 x 41.7 mm (1.5 x 1.6 inches) with a 13.0:1 compression ratio.
On the scales, the Phantom R 12 Agua measures 43 kg (95 lbs) dry, translating to a power-to-weight ratio of 0.26 HP/kg (3.91 kg per horsepower). Rider ergonomics and chassis geometry center around a 670 mm (26.4 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 975 mm (38.4 in) wheelbase engineered for quick, flickable steering geometry. The 2.5-liter (0.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Factory Bike archive, this model family spans 2 indexed model years from 2005 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power-to-Weight
0.26 HP/kg (3.91 kg/HP)
Standover Height
670 mm (26.4 in)
Engine
Displacement49.8 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power11.0 HP (8.0 kW))
Compression13.0:1
Bore x Stroke39.0 x 41.7 mm (1.5 x 1.6 inches)
Fuel SystemCarburettor. Dell´Ortho 19 mm
IgnitionCDI
LubricationMixed 2T oil 2%
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveChain (final drive)
ClutchAutomatic
Chassis
Frame TypeHardened steel
Front SuspensionPaioli
Rear SuspensionMonshock
Wheelbase975 mm (38.4 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø165 mm (6.5 inches)
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight43.0 kg (94.8 pounds)
Power/Weight0.2558 HP/kg
Seat Height670 mm (26.4 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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
