Aprilia Pegaso 125 (1989-90)

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The Aprilia 125 Pegaso motorcycle was produced from 1989-90 and featured a two-stroke, single cylinder engine with reed valves and a capacity of 124cc. The bore and stroke were 54 x 54.5mm, and the compression ratio was 14.0:1. The bike was liquid-cooled and used a dry sump lubrication system with an external oil pump. The induction used a Dell’Orto carburetor with a diameter of about 34mm, and it started with an electric starter. The maximum power output was 23 kW (31 hp) at 10,000 rpm, and the maximum torque was 22.5 Nm (2.3 kgf-m, 16.6 ft-lb) at 8,500 rpm. The clutch was wet and cable-operated, and it had a six-speed transmission with a final drive chain. The frame was a steel double cradle with 28 degrees of rake and 100 mm (3.9 in) of trail. The front suspension used about 41 mm inverted telescopic forks with 210 mm (8.3 in) of travel, while the rear suspension was a single shock with preload adjustable and 220 mm (8.7 in) of travel. The front brake was a single ~A300 mm disc with a 2-piston caliper.

Technical specifications:

Make Model: Aprilia 125 Pegaso

Year: 1989 – 90


Engine: Two stroke, single cylinder, reed valves
Capacity: 124 cc / 7.6 cu in
Bore x Stroke: 54 x 54.5mm
Compression Ratio: 14.0:1
Cooling System: Liquid cooled
Lubrication: Dry sump, external oil pump
Induction: ~A34 mm Dell’Orto carburetor
Starting: Electric
Max Power: 23 kW / 31 hp @ 10000 rpm
Max Torque: 22.5 Nm / 2.3 kgf-m / 16.6 ft-lb @ 85000 rpm
Clutch: Wet, cable operatied
Transmission: 6 Speed
Final Drive: Chain
Frame: Steel double cradle
Rake: 28 degrees

Trail: 100 mm / 3.9 in
Front Suspension: ~A41 mm Inverted telescopic forks
Front Wheel Travel: 210 mm / 8.3 in
Rear Suspension: Single chock preload adjustable
Rear Wheel Travel: 220 mm / 8.7 in
Front Brakes: Single ~A300 mm disc, 2 piston caliper

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