Aprilia RX 125 (1991-92)

Make Model: Aprilia RX 125 Six Days ModelM


Year: 1991 – 92
Engine: Single cylinder, two stroke, Rotax 123 with Gilardoni 2 cylinder/head
Capacity: 124.8 cc / 7.6 cu in
Bore x Stroke: 54 x 54.5 mm
Compression Ratio: 11.5:1
Cooling System: Liquid cooled
Induction: VHSB34 LD carburetor
Starting: Kick
Max Power: 25.7 kW / 34.5 hp @ 10800 rpm
Max Torque: 20.6 Nm / 2.1 kgf-m / 15.2 lb-ft @ 10500 rpm
Transmission: 6 Speed
Final Drive: #520 Chain, 12T to 17T pinion gear, 49T spur gear
Front Suspension: Marzocchi upside down fork
Rear Suspension: Swingarm with single shock absorber, Aprilia Progressive System with fully adjustable Boge Sachs shock absorber
Front Brakes: Single disc, 250 mm
Rear Brakes: Single disc, 220 mm
Front Tyre: 90/90-21
Rear Tyre: 120/90-18
Wet Weight: 110 kg / 243 lbs
Fuel Capacity: 9 L / 2.4 US gal / 2.0 Imp gal
Consumption Average: 5.5 L/100 km / 18.2 km/l / 42.8 US mpg / 51.4 Imp mpg

Braking 60 km/h / 32 mph – 0: 14.8 m / 48.6 ft
Braking 100 km/h / 67 mph – 0: 43.1 m / 141.4 ft
Standing 1/4 Mile: 15.2 sec / 131.4 km/h / 81.6 mph
Top Speed: 132.2 km/h / 82.1 mph
Road Test: Motosprint 1990 Group Test


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