Aprilia 125 Classic (1995-96)

The Aprilia 125 Chopper was a single-cylinder, two-stroke motorcycle produced in 1995 and 1996 by Italian manufacturer Aprilia. It had a liquid-cooled engine with a capacity of 124.8cc and a compression ratio of 12.5:1. The bike used a Dell’Orto PHBH 28 RD carburetor for induction and CDI for ignition, and had a maximum power output of 11.2 kW (15 hp) at 6600 rpm and a maximum torque of 12.7 Nm (9.4 lb-ft) at 6500 rpm. It had a six-speed transmission with a chain final drive and a primary ratio of 19:63. The bike’s frame was a double open cradle with a 33-degree rake and 98mm (3.9in) of trail. Its suspension included a telescopic fork up front and two hydraulic shock absorbers at the rear, and it had a front disc brake and rear drum brake. The bike’s dimensions were 2300mm (90.6in) in length, 780mm (30.7in) in width, and 1120mm (44.1in) in height, with a wheelbase of 1550mm (61.0in) and a wet weight of 148kg (326lbs). The bike had a fuel capacity of 10 liters (2.6 US gal) and a fuel consumption rate of 2.8 L/100 km (35.2 km/l) with a top speed of 114 km/h (70.8 mph).

Technical specifications:

Make Model: Aprilia 125 Chopper

Year: 1995 – 96
Engine: Single cylinder, two-stroke
Capacity: 124.8 cc / 7.5 cu in
Bore x Stroke: 54 x 54.5 mm
Compression Ratio: 12.5:1
Cooling System: Liquid cooled
2-Stroke Oil: Max 2T Competition
Induction: Dell’Orto PHBH 28 RD carburetor
Ignition: CDI
Spark Plug: NGK BR10 EG
Starting: Electric
Battery: 12V – 9Ah
Max Power: 11.2 kW / 15 hp @ 6600 rpm
Max Torque: 12.7 Nm / 1.3 kgf-m 9.4 lb-ft @ 6500 rpm
Transmission: 6 Speed
Final Drive: Chain
Gear Ratios: 1st 10:30 / 2nd 14:29 / 3rd 17:27 / 4th 19:25 / 5th 21:23 / 6th 22:21
Primary Ratio: 19:63
Secondary Ratio (with chain): 14:40
Gearbox Oil: SAE 75W-90
Frame: Double open cradle
Rake: 33 degrees
Trail: 98 mm / 3.9 in
Front Suspension: Telescopic fork
Front Wheel Travel: 120 mm / 4.7 in
Rear Suspension: 2 x Hydraulic shock absorbers
Rear Wheel Travel: 70 mm / 2.8 in
Front Brakes: Single ~A230 mm disc, 2 piston caliper
Rear Brakes: Drum, ~A160 mm
Wheels: Stainless steel with ~A4 mm spokes
Front Rim: 1.85 x 19
Rear Rim: 2.50 x 16
Front Tyre: 90/90-19
Rear Tyre: 130/90-16
Dimensions: Length: 2300 mm / 90.6 in Width: 780 mm / 30.7 in Height: 1120 mm / 44.1 in
Wheelbase: 1550 mm / 61.0 in
Seat Height: 830 mm / 32.7 in
Ground Clearance: 180 mm / 7.1 in
Wet Weight: 148 kg / 326 lbs
GVWR: 320 kg / 705 lbs
Fuel Capacity: 10 Litres / 2.6 US gal
Fuel Capacity Reserve: 2 Litres / 0.5 US gal
Mixer Oil: 2 Litres / 0.5 US gal
Mixer Oil Reserve: 0.5 L / 1.1 US pts
Average Fuel Consumption: 2.8 L/100 km / 35.2 km/l / 83 US mpg
Standing 1/4 mile: 18.8 sec
Top Speed: 114 km/h / 70.8 mph