Aprilia ST 125

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Aprilia ST 125
Manufacturer
Production 1983 - 1985
Class Supermotard
Engine
liquid-cooled, two-stroke, single cylinder
Bore / Stroke 53.3mm x 53.3mm
Compression ratio 14.5:1
Horsepower 17.97 HP (13.4 KW) @ 8250RPM
Torque 10.33 ft/lbs (14.0 Nm) @ 8250RPM
Transmission Gear box: gears

Final Drive: chain

Clutch: wet multi-disc, manual
Suspension Front: 32mm Marzocchi telescopic fork
Rear: monoshock
Brakes Front: single 230mm disc
Rear: 160mm drum
Front Tire 2.75-18
Rear Tire 3.00-18
Seat Height 31.5 inches (800 mm)
Weight 104.0 kg (wet)
Manuals Service Manual


The Aprilia ST 125 was a liquid-cooled, two-stroke, single cylinder Supermotard motorcycle produced by Aprilia between 1983 and 1985. Max torque was 10.33 ft/lbs (14.0 Nm) @ 8250 RPM. Claimed horsepower was 17.97 HP (13.4 KW) @ 8250 RPM.

Engine[edit]

A 53.3mm bore x 53.3mm stroke result in a displacement of just 124.0 cubic centimeters.

Drive[edit]

The bike has a gears transmission. Power was moderated via the wet multi-disc, manual.

Chassis[edit]

It came with a 2.75-18 front tire and a 3.00-18 rear tire. Stopping was achieved via single 230mm disc in the front and a 160mm drum in the rear. The front suspension was a 32mm Marzocchi telescopic fork while the rear was equipped with a monoshock.

1983 Aprilia ST 125[edit]

The 1983 MY Aprilia ST 125 has, at its heart, a liquid-cooled, two-stroke, 124cc, single cylinder lump paired to a six-speed manual transmission, and can produce 18 horsepower and 14 Nm of torque. This entry-level machine is best suited for the more young and inexperienced among riders, and comes standard with features such as a 32mm Marzocchi telescopic front fork, a single shock absorber in the rear, a front disc brake and a drum in the rear, an analogue instrument cluster and blacked-out engine accents.


1984 Aprilia ST 125[edit]

The 1984 MY Aprilia ST 125 has been designed by the House of Noale for the younger among its fans that want a two-wheeler suitable for the busy traffic found in the urban jungle. It boasts standard features such as a 32mm Marzocchi telescopic front fork, a single shock absorber in the rear, a front disc brake and a drum in the rear, an analogue instrument cluster and blacked-out engine accents.

In the tech/engine department, it sports a liquid-cooled, two-stroke, 124cc, single cylinder lump mated toa six-speed manual transmission, and can reach a maximum power output of 18 horsepower and 14 Nm of torque.


1985 Aprilia ST 125[edit]

1985 Aprilia ST 125 1985 Aprilia ST 125 1985 Aprilia ST 125 1985 Aprilia ST 125

The 1985 MY Aprilia ST 125 is one of the first entry-level supermoto two-wheelers developed by the House of Noale. It has, at its heart, a liquid-cooled, two-stroke, 124cc, single cylinder powerplant mated to a six-speed manual transmission, and can produce a claimed 18 horsepower and 14 Nm of torque.

It also comes standard with the high-end feature such as a 32mm Marzocchi telescopic front fork, a single shock absorber in the rear, a front disc brake and a drum in the rear, an analogue instrument cluster and blacked-out engine accents.