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Super motard · 2010

pr4 125 sm

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MotoLibrary Score
34 /100 Commuter
Power/Weight
0.12 hp/kg
Torque
9 Nm
Engine
124 ccm

2010 ajp pr4 125 sm Technical Analysis & Specification Breakdown

At the heart of the 2010 ajp pr4 125 sm super motard motorcycle, ajp utilizes a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 12.6 HP (9.2 kW) at 8,500 rpm while maximum torque reaches 8.5 Nm (6.3 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 101.6 HP per liter and a 500 rpm working window between peak torque (8,000 rpm) and peak power (8,500 rpm), 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 sm measures 104 kg (229 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.25 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 7.5-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Specific Output
101.6 HP/L
Power-to-Weight
0.12 HP/kg (8.25 kg/HP)
Power Band Window
8,000–8,500 rpm
Standover Height
910 mm (35.8 in)
Engine
Displacement 124.0 ccm (7.57 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 12.6 HP (9.2 kW)) @ 8500 RPM
Torque 8.5 Nm (0.9 kgf-m or 6.3 ft.lbs) @ 8000 RPM
Bore x Stroke 59.5 x 49.5 mm (2.3 x 1.9 inches)
Valves/Cylinder 2
Fuel System Carburettor. Walbro 30 mm
Fuel Control Single Overhead Cams (SOHC)
Ignition C.D.I.
Cooling Air
Transmission
Gearbox 5-speed
Final Drive Chain (final drive)
Chassis
Frame Type Steel double-cradle, detachable rear frame
Front Suspension Paioli Hydraulic fork,
Front Travel 260 mm (10.2 inches)
Rear Suspension Sachs mono shock progressive action
Rear Travel 290 mm (11.4 inches)
Wheelbase 1410 mm (55.5 inches)
Wheels & Brakes
Front Tyre 100/80-17
Rear Tyre 130/70-17
Front Brakes Single disc. 2 piston caliper
Front Brake Ø 255 mm (10.0 inches)
Rear Brakes Single disc. 2 piston caliper
Rear Brake Ø 210 mm (8.3 inches)
Dimensions & Weight
Dry Weight 104.0 kg (229.3 pounds)
Power/Weight 0.1212 HP/kg
Seat Height 910 mm (35.8 inches) If adjustable, lowest setting.
Fuel Capacity 7.50 litres (1.98 US gallons)
Other
Starter Electric & kick
Notes

Portuguese brand.

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Power
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Torque
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Seat Height
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Weight
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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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏁
Best For
Sport & Track
📏
Seat Height
91 cm / 35.8 in
⚖️
Handling
Very lightweight — easy to handle
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