Aprilia AS 125R

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Aprilia AS 125R
Production 1986
Class Naked
liquid-cooled, two-stroke, single cylinder
Bore / Stroke 53.3mm x 53.3mm
Compression ratio 14.2:1
Horsepower 26.02 HP (19.4 KW) @ 8500RPM
Transmission Gear box: gears

Final Drive: chain

Clutch: wet multi-disc, manual
Suspension Front: 32mm Marzocchi telescopic fork
Rear: monoshock
Brakes Front: single 240mm disc
Rear: single 230mm disc
Front Tire 100-90-16
Rear Tire 100-90 -18
Wheelbase 53.7 inches (1364 mm)
Seat Height 31.5 inches (800 mm)
Weight 117.0 kg (wet)
Manuals Service Manual

The Aprilia AS 125R was a liquid-cooled, two-stroke, single cylinder Naked motorcycle produced by Aprilia in 1986. Claimed horsepower was 26.02 HP (19.4 KW) @ 8500 RPM.


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


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


It came with a 100-90-16 front tire and a 100-90 -18 rear tire. Stopping was achieved via single 240mm disc in the front and a single 230mm disc in the rear. The front suspension was a 32mm Marzocchi telescopic fork while the rear was equipped with a monoshock. The wheelbase was 53.7 inches (1364 mm) long.

1986 Aprilia AS 125R[edit]

1986 Aprilia AS 125R

The 1986 MY Aprilia AS 125R sports a liquid-cooled, two-stroke, 124cc, single cylinder engine mated to a six-speed manual transmission, and can produce a claimed 26 horsepower at 8500 rpm. It comes standard with a 32mm Marzocchi non-adjustable telescopic fork, a rear monoshock, a braking system with front and rear disc brakes, a dual seat, lightweight, four-spoked wheels, a small, nose-fairing with a small windscreen, and black engine accents.