The Vespa ET4 50 motorcycle was produced from 2000 to 2005, featuring a four-stroke, single-cylinder engine with a capacity of 49.3 cc and a compression ratio of 11.1:1, producing a maximum power of 2.5 kW at 6500 rpm. The engine is lubricated by a wet pump driven by a chain, feeding a carburetor from Weber or Dell’Orto or Mikuni 2-phase. The bike is air-cooled and forced, starting by kick-start and with an electronic capacitive ignition system. The transmission is CVT, and the clutch is automatic with a dry centrifugal system. The Vespa ET4 50 has a load-bearing pressed sheet steel frame, with hydraulic single shocks on the front and rear suspensions. The front brakes are a 200 mm disc, and the rear brakes are a 110 mm drum, while the wheels are pressed die-cast aluminum alloy. The bike has a seat height of 805 mm and a wet weight of 96 kg, with a fuel capacity of 9 L and a top speed of 45 km/h. It was available in White, Pearl white, Seafoam green, Blue, Dragon red, and Alabaster colors. Motorcycle.com reviewed the bike.
Technical specifications:
Make Model: Vespa ET4 50
| Year | 2000 – 05 |
|---|---|
| Engine | Four stroke, single cylinder |
| Capacity | 49.3 cc / 3.0 cub in |
| Bore x Stroke | 39 x 41.8 mm |
| Compression | 11.1:1 |
| Lubrication | Wet pump, chain driven trochoidal pump |
| Carburetor | Weber / Dell’Orto / Mikuni 2-phase |
| Cooling | Air cooled, forced |
| Spark Plug | NGK CR9EB / NGK CR9EIX |
| Ignition | Electronic capacitive (CDI) |
| Starting | Kick start |
| Clutch | Automatic, dry centrifugal |
| Max Power | 2.5 kW / 3.4 hp @6500 rpm |
| Transmission | CVT |
| Final Drive | Belt |
| Frame | Loadbearing pressed sheet steel |
| Dimensions | Length: 1760 mm / 30.7 in Width: 700 mm / 27.6 in |
| Wheel Base | 1280 mm / 50.4 in |
| Front Suspension | Hydraulic single shock |
| Rear Suspension | Hydraulic single shock |
| Front Brakes | 200 mm disc |
| Rear Brakes | 110 mm drum |
| Wheels | Pressed die cast aluminium alloy |
| Front Tyre | 100/80-10″ |
| Rear Tyre | 120/70-10″ |
| Dimensions | Length: 1760 mm / 69.3 in Width: 670 mm / 26.4 in |
| Wheelbase | 1280 mm / 50.4 in |
| Seat Height | 805 mm / 31.7 in |
| Wet Weight | 96 kg / 212 lbs |
| Fuel Capacity | 9 L / 2.4 US gal |
| Top Speed | 45 km/h / 28 mph |
| Colours | White, Pearl white, Seafoam green, Blue, Dragon red, Alabaster |
| Review | Motorcycle.com |
