Aprilia 125 Chopper (1997-00)

The Aprilia 125 Chopper was a motorcycle manufactured from 1997 to 2000. It featured a single cylinder, two-stroke engine with a capacity of 124.8cc and had a compression ratio of 12.5:1. The bike was liquid cooled and used a Dell’Orto PHBH 28 RD carburetor for induction. The ignition was CDI and the spark plug was NGK BR10 EG. The bike had an electric start and a 12V 9Ah battery. It produced a maximum power of 11.2 kW at 6600 rpm and maximum torque of 12.7 Nm at 6500 rpm. It had a 6-speed transmission with a chain final drive and gear ratios of 1st 10:30, 2nd 14:29, 3rd 17:27, 4th 19:25, 5th 21:23, and 6th 22:21. The primary ratio was 19:63 and the secondary ratio (with chain) was 14:40. The gearbox oil used was SAE 75W-90. The bike had a double open cradle frame with a rake of 33 degrees.

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Technical specifications:

Make Model: Aprilia 125 Chopper

Year: 1997 – 00

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