Positioned in ajp's trial motorcycle lineup, the 2005 ajp pr4 125 trial features a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 14.8 HP (10.8 kW), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 118.4 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the pr4 125 trial measures 98 kg (216 lbs) dry, translating to a power-to-weight ratio of 0.15 HP/kg (6.62 kg per horsepower). Rider ergonomics and chassis geometry center around a 910 mm (35.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry. The 9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
118.4 HP/L
Power-to-Weight
0.15 HP/kg (6.62 kg/HP)
Standover Height
910 mm (35.8 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power14.8 HP (10.8 kW))
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlOverhead Cams (OHC)
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic fork
Front Travel260 mm (10.2 inches)
Rear SuspensionSingle shock-absorber of progresive action
Rear Travel260 mm (10.2 inches)
Wheelbase1410 mm (55.5 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre120/80-18
Front BrakesSingle disc
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø185 mm (7.3 inches)
Dimensions & Weight
Dry Weight98.0 kg (216.1 pounds)
Power/Weight0.1505 HP/kg
Seat Height910 mm (35.8 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
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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.
