Vespa PK125, PK125S, Elestart, Automatica (1982-90) vs Yamaha FJR 1300AE (2006) vs Kawasaki H2 750 Mach IV (1974)
Comparison technical specifications
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| Make: | Vespa | Yamaha | Kawasaki |
| Model: | PK125, PK125S, Elestart, Automatica | FJR 1300AE | H2 750 Mach IV |
| Years: | 1982-90 | 2006 | 1974 |
| Engine: | Single cylinder, 2 stroke | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, transverse three cylinder |
| Capacity: | 121.2 cc / 7.4 cub in | 1298 cc / 79.2 cu-in | 748 cc / 45.6 cu-in |
| Bore x Stroke: | 55 x 51 mm | 79 x 66.2 mm | 71 х 63 mm |
| Starting: | Kick start | Electric | Kick |
| Clutch: | Wet, multiplate | Wet, multiple discs, cable operated | Wet, multi-plate |
| Max Power: | 5 kW / 6 hp | 145 hp / 105.7 kW @ 8500 rpm | 74 hp / 55.1 kW @ 6800 rpm |
| Transmission: | 4 Speed, grip-shift, constant mesh | 5 Speed Yamaha Chip-Controlled Shift (YCC-S) | 5 Speed |
| Final Drive: | Direct drive | Shaft | Chain |
| Frame: | Pressed sheet steel, streamlined monocoque structure | Aluminium, twin spar | Tubular, double cradle |
| Front Brakes: | Drum | 2x 320mm discs 4 piston calipers | Single 295mm disc |
| Rear Brakes: | Drum | Single 283mm disc 2 piston caliper | 203mm drum |
| Front Tyre: | 3.0 x 10" | 120/70 ZR17 | 8.25-19 |
| Rear Tyre: | 3.0 x 10" | 180/55 ZR17 | 4.00-18 |
| Wheelbase: | 1175 mm / 46.5 in | 1544.3 mm / 60.8 in | 1410 mm / 55.4 in |
| Ground Clearance: | 252 mm / 9.9 in | 130 mm / 5.1 in. | 183 mm / 7.2 in. |
| Dry Weight: | 87 kg / 182 lbs | 264 kg / 582 lbs | 192 kg / 423.2 lbs |
| Fuel Capacity: | 6.2 L / 1.6 US gal | 25 Liters / 6.6 gal | 16.7 Litres / 4.4 US gal |
| Top Speed: | 92 km/h / 57 mph | 244.9 km/h / 152.1 mph | 120 mph / 192 km/h |