Vespa ET4125: history, specs, pictures

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Vespa ET4125
Manufacturer
Also called ET4 125
Production 2005
Engine
single cylinder, four-stroke
Bore / Stroke 57.0mm x 48.6mm
Top Speed 59 mph (95 km/h)
Horsepower 15.69 HP (11.7 KW) @ 8800RPM
Ignition electronic cdi and variable timing
Transmission Gear box: automatic
Clutch: automatic centrifuge type
Suspension Front: oscillating arm with helicoidal spring and hydraulic double effect single damper
Rear: helicoidal adjustable spring and hydraulic double effect single damper
Brakes Front: double disc
Rear: expanding brake (drum brake)
Front Tire 100/80-10
Rear Tire 120/70-10
Wheelbase 50.39 inches (1280 mm)
Length 69.29 inches (1760 mm)
Width 27.56 inches (700 mm)
Seat Height 30.71 inches (780 mm)
Weight 229.28 pounds (104.0 Kg) (dry),
Fuel Capacity 2.38 Gallon (9.00 Liters)
Manuals Service Manual


The Vespa ET4125 was a single cylinder, four-stroke standard produced by Vespa in 2005. It could reach a top speed of 59 mph (95 km/h). Claimed horsepower was 15.69 HP (11.7 KW) @ 8800 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, four-stroke. A 57.0mm bore x 48.6mm stroke result in a displacement of just 124.0 cubic centimeters. Fuel was supplied via a single overhead cams (sohc).

Drive[edit | edit source]

The bike has a automatic transmission. Power was moderated via the automatic centrifuge type.

Chassis[edit | edit source]

It came with a 100/80-10 front tire and a 120/70-10 rear tire. Stopping was achieved via double disc in the front and a expanding brake (drum brake) in the rear. The front suspension was a oscillating arm with helicoidal spring and hydraulic double effect single damper while the rear was equipped with a helicoidal adjustable spring and hydraulic double effect single damper. The ET4125 was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 229.28 pounds (104.0 Kg). The wheelbase was 50.39 inches (1280 mm) long.