Categories: Aprilia

Aprilia AF1 Prototype (1985)

The Aprilia AF1 Prototipo was a motorcycle model released in 1985. It had a two-stroke, single cylinder engine with a capacity of 123cc and a compression ratio of 15.5:1. The bike was liquid cooled and had a Dell’Orto carburetor with a 28mm induction. It had a maximum power of 18.7 kW / 25.1 hp @10000 rpm and a maximum torque of 17.7 Nm / 1.8 kgf-m / 13.1 lb-ft @ 8000 rpm. The transmission was 6 speed and it had a final drive of chain. The bike had a telescopic fork front suspension and a Sebac mono shock rear suspension. The front brakes were a single 260mm disc and the rear brakes were a single 240mm disc. The dry weight was 120 kg / 265 lbs and wet weight was 134.6 kg / 297 lbs. The fuel capacity was 22.5 L / 5.9 US gal and the bike had an average consumption of 4.4 L/100 km / 22.7 km/l / 53 US mpg. The bike could brake from 60 km/h / 37 mph to 0 in 12.8 m / 42.0 ft, and from 100 km/h / 62 mph to 0 in 39.9 m / 131 ft. It could complete a standing 1/4 mile in 15.9 sec / 129.3 km/h / 80.3 mph and had a top speed of 156.6 km/h / 97.3 mph.


Technical specifications:

Make Model: Aprilia AF1 Prototipo

Year: 1985

Engine: Two stroke, single cylinder

Capacity: 123 cc / 7.5 cu in



Bore x Stroke: 54 x 54.5mm

Compression Ratio: 15.5:1

Cooling System: Liquid cooled

Induction: Dell’Orto carburetor, 28 mm

Max Power: 18.7 kW / 25.1 hp @10000 rpm

Max Torque: 17.7 Nm / 1.8 kgf-m / 13.1 lb-ft @ 8000 rpm

Transmission: 6 Speed

Final Drive: Chain

Front Suspension: Telescopic fork, 4-way anti-drive adjustable

Rear Suspension: Sebac mono shock

Front Brakes: Single 260 mm disc

Rear Brakes: Single 240mm disc

Front Tyre: 100/80-16


Rear Tyre: 120/80-16

Dry Weight: 120 kg / 265 lbs

Wet Weight: 134.6 kg / 297 lbs

Fuel Capacity: 22.5 L / 5.9 US gal

Consumption Average: 4.4 L/100 km / 22.7 km/l / 53 US mpg

Braking 60 km/h / 37 mph – 0: 12.8 m / 42.0 ft

Braking 100 km/h / 62 mph – 0: 39.9 m / 131 ft

Standing 1/4 Mile: 15.9 sec / 129.3 km/h / 80.3 mph

Top Speed: 156.6 km/h / 97.3 mph
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