AJP PR4 Supermoto Pro 125 - 2020 Specifications and Reviews

The AJP PR4 Supermoto Pro 125 is a lightweight Portuguese supermoto designed for young riders and enthusiasts seeking agile handling and off-road capability. Its compact 112kg frame, generous ground clearance, and adjustable suspension make it ideal for learning both street and dirt riding. Known for responsive performance and affordability, it suits riders who value versatility and skill development.

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General information

CategorySuper motard
Year2020
ModelAJP PR4 Supermoto Pro 125

Engine and Transmission Specifications

ClutchOil bath, multidisc
Transmission typeChain   (final drive)
Gearbox5-speed
Cooling systemAir
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemCarburettor. 30 mm
Valves per Cylinder2
Bore x Stroke56.5 x 49.5 mm (2.2 x 1.9 inches)
Torque8.5 Nm (0.9 kgf-m or 6.3 ft.lbs)
Power12.6 HP (9.2 kW) @ 8400 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.0 ccm (7.57 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Single-piston caliper
Diameter260 mm (10.2 inches)
Front brakesSingle disc. 2-piston calipers
Rear tire130/70-17
Front tire100/80-17
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionZF Sachs progressive system, fully adjustable
Front wheel travel280 mm (11.0 inches)
Front SuspensionAJP Ø43 mm – fully adjustable
Frame typeComposite - aluminum/steel
 
 

Physical measures and capacities

Fuel capacity7.00 litres (1.85 US gallons)
Wheelbase1360 mm (53.5 inches)
Ground clearance335 mm (13.2 inches)
Seat height870 mm (34.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc112.0 kg (246.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsAJP is a Portuguese brand.
StarterElectric
Color optionsWhite/red/grey

Performance Profile & Rider Fit

12.6 hp
Peak Power

Best For

Track60%
City75%
Cornering88%
Daily Riding45%
Touring15%
Passenger15%

Rider Profile

Best ForThis bike suits beginner to intermediate riders who want a light, low-powered machine to build confidence and sharpen technique.
PurposeIt's built for playful supermoto-style riding, sharp handling on tight roads, and short, agile city or backroad jaunts rather than outright speed.
Rider FitIts very low weight and compact dimensions make it easy to manage for smaller or less physically strong riders, though the fairly tall seat height demands reasonable leg length.
CharacterA nimble, flickable little machine with premium fully-adjustable suspension that rewards an eager, playful riding style over long-distance cruising.
Not Ideal ForIt's not for riders wanting sustained highway speeds, long-distance touring comfort, or a passenger-friendly setup.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2020 AJP PR4 Supermoto Pro 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 870mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2020 AJP PR4 Supermoto Pro 125, with a relaxed knee angle of around 130 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2020 AJP PR4 Supermoto Pro 125 is an impressive motorcycle for those looking for a versatile and agile ride. With its powerful 125cc engine and lightweight design, the PR4 Supermoto Pro offers quick acceleration and easy maneuverability. The bike's suspension and brakes are top-notch, providing riders with a smooth and responsive handling experience, making it perfect for urban commuting or off-road adventures. Overall, the 2020 AJP PR4 Supermoto Pro 125 is a solid choice for riders who want a high-performance motorcycle that can handle a variety of terrains. Its sleek design and powerful engine make it a standout in its class, and its reliable build quality ensures that it will be a long-lasting investment. Whether you're a beginner or a seasoned rider, the PR4 Supermoto Pro offers an exciting and enjoyable riding experience.
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