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Custom - Cruiser · 1999

125 Classic

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MotoLibrary Score
36 /100 Commuter
Power/Weight
0.08 hp/kg
Top Speed
103 km/h
Torque
13 Nm
Engine
125 ccm

1999 Aprilia 125 Classic Technical Analysis & Specification Breakdown

Engineered by Aprilia for the custom - cruiser motorcycle segment, the 1999 Aprilia 125 Classic features a 124.8 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 11.4 HP (8.3 kW) at 6,700 rpm while maximum torque reaches 13 Nm (9.6 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 91.3 HP per liter and a 700 rpm working window between peak torque (6,000 rpm) and peak power (6,700 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the 125 Classic measures 150 kg (331 lbs) wet (curb), translating to a power-to-weight ratio of 0.08 HP/kg (13.16 kg per horsepower). Rider ergonomics and chassis geometry center around a 720 mm (28.3 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,550 mm (61 in) wheelbase engineered for planted straight-line stability. The 10-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 103 km/h (64 mph).

Specific Output
91.3 HP/L
Power-to-Weight
0.08 HP/kg (13.16 kg/HP)
Power Band Window
6,000–6,700 rpm
Standover Height
720 mm (28.3 in)
Engine
Displacement 124.8 ccm (7.62 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Rotax 122: Aluminium cylinder with Nikasil coated liner. Reed valve intake.
Power 11.4 HP (8.3 kW)) @ 6700 RPM
Torque 13.0 Nm (1.3 kgf-m or 9.6 ft.lbs) @ 6000 RPM
Compression 12.5:1
Bore x Stroke 54.0 x 54.5 mm (2.1 x 2.1 inches)
Fuel System Carburettor. Dell Orto PHBL 24 GS
Fuel Control Membrane
Ignition Nippondenso CDI 071000-0910 QCA91
Lubrication Separate mixing with variable displacement, volumetric pump.
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch Multi plate in oil bath
Driveline Primary drive: Gearbox: 63/19 (3.32). Final drive: Chain: 15/40 (2.67)
Performance
Top Speed 103.0 km/h (64.0 mph)
Emission Details ECE R40-01
Exhaust MF [e3] *89/235*0065*
Chassis
Frame Type Double cradle made of circular steel tubes
Rake 33.0°
Trail 98 mm (3.9 inches)
Front Suspension Hydraulic fork, 40 mm
Front Travel 120 mm (4.7 inches)
Rear Suspension Steel tube swingarm. Two hydraulic shocks with adjustable spring preload.
Rear Travel 70 mm (2.8 inches)
Wheelbase 1550 mm (61.0 inches)
Ground Clearance 180 mm (7.1 inches)
Wheels & Brakes
Front Tyre 90/90-19
Rear Tyre 130/90-16
Front Brakes Single disc. Axial caliper, 2 pistons
Front Brake Ø 260 mm (10.2 inches)
Rear Brakes Expanding brake (drum brake)
Rear Brake Ø 160 mm (6.3 inches)
Wheels Spoke wheels. Front 1.85 x 19, rear 2.15 x 16.
Dimensions & Weight
Dry Weight 145.0 kg (319.7 pounds)
Weight incl. 150.0 kg (330.7 pounds)
Power/Weight 0.1034 HP/kg
Seat Height 720 mm (28.3 inches) If adjustable, lowest setting.
Overall Height 1110 mm (43.7 inches)
Overall Length 2300 mm (90.6 inches)
Overall Width 780 mm (30.7 inches)
Fuel Capacity 10.00 litres (2.64 US gallons)
Reserve Fuel 2.00 litres (0.53 US gallons)
Oil Capacity 0.60 litres (0.63 US quarts)
Other
Starter Electric
Color Options Grey/Red, Black/Cyan
Notes

Type MF04.

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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
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Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
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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
Cruising & Touring
📏
Seat Height
72 cm / 28.3 in
⚖️
Handling
Manageable weight for most riders
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