Vespa 125, P125X, PX 125, PX 125 Arcobleno/Lusso, PK125 S, GTS Super (1977-97) vs Aprilia RS 125 R (1997-98) vs Vespa 125 Primavera (1965-83)
Comparison technical specifications
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| Make: | Vespa | Aprilia | Vespa |
| Model: | 125, P125X, PX 125, PX 125 Arcobleno/Lusso, PK125 S, GTS Super | RS 125 R | 125 Primavera |
| Years: | 1977-97 | 1997-98 | 1965-83 |
| Engine: | Two stroke, single cylinder | Single cylinder, two stroke, reed valves induction | Two stroke, single cylinder |
| Capacity: | 123.4 cc 7.5 cub in | 125 cc / 7.6 cu in | 121.2 cc / 7.4 cub in |
| Bore x Stroke: | 52.5 x 57.0 mm | 54 x 54.5mm | 55 x 51 mm |
| Starting: | Kick start | Electric | Kick start |
| Max Power: | 5.9 kW / 8 hp @ 5800 rpm | 24.8 kW / 34 hp @ 11000 rpm | 4.1 kW / 5.6 hp @ 5500 rpm |
| Transmission: | 4 Speed, grip-shift, constant mesh | 6 Speed | 4 Speed, grip-shift, constant mesh |
| Final Drive: | Direct drive | Chain | Direct drive |
| Front Suspension: | Helical spring and double acting hydraulic dampers | Upside-down forks, Ø 40mm | Elastic with coil spring and hydraulic shock |
| Rear Suspension: | Helical spring and double acting hydraulic dampers | Monoshock | Elastic with coil spring and hydraulic shock |
| Front Brakes: | Drum, 125 mm | Single 320 mm discs, 4 piston caliper | Drum |
| Rear Brakes: | Drum, 125 mm | Single 240 mm disc, 2 piston caliper | Drum |
| Front Tyre: | 3.5 x 10" | 110/70-17 | 3.0 x 10" |
| Rear Tyre: | 3.5 x 10" | 150/60-17 | 3.0 x 10" |
| Dry Weight: | 112 kg / 247 lbs | 115 kg / 254 lbs | 73 kg / 161 lbs |
| Fuel Capacity: | 8 L / 2.1 US gal | 11.5 L / 3.0 US gal | 5.5 L / 1.5 US gal |
| Consumption average: | 2,7 L/100 km / 37 km/l / 87 US mpg | 5.1 L/100 km / 19.5 km/l / 45.9 US mpg | 2 L/100 km / 50 km/l / 117 US mpg |
| Top Speed: | 100 km/h / 62 mph | 171.3 km/h / 106 mph | 85 km/h / 53 mph |