Suzuki GSX-R 400 (1986) vs Vespa 125 (1948-50) vs Suzuki DR 650S (2017-18)
Comparison technical specifications
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| Make: | Suzuki | Vespa | Suzuki |
| Model: | GSX-R 400 | 125 | DR 650S |
| Years: | 1986 | 1948-50 | 2017-18 |
| Engine: | Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC | Four stroke, single cylinder | Four stroke, single cylinder. SOHC, 4 Valve per cylinder. |
| Capacity: | 398 cc / 24.3 cu-in | 124.8 cc 7.6 cub in | 644 cc / 39.3 cu in |
| Bore x Stroke: | 53 x 45.2 mm | 56.5 x 49.8 mm | 100 x 82 mm |
| Compression Ratio: | 11.5:1 | 6.5:1 | 9.5:1 |
| Induction: | 2 x AS27VW carburetors | Deflector piston | Mikuni BST40 |
| Ignition: | CDI | Magneto | Electronic Ignition |
| Starting: | Electric | Kick start | Electric |
| Max Power: | 44 kW / 59 hp @ 11000 rpm | 2.6 kW / 3.5 hp @4500 rpm | 32 kW / 43.5 hp / @ 6400 rpm (at rear tyre 27.9 kW / 37.4 hp @ 6500 rpm) |
| Clutch: | Wet multi-plate | Oil bath, multi plate | Wet, cable operated |
| Transmission: | 6 Speed, constant mesh | 3 Speed, grip-shift | 5 Speed |
| Final Drive: | Chain | Direct drive | Chain, 525 links |
| Front Suspension: | Telescopic forks | Trail arm, coil spring | Telescopic, leading axle, oil damped |
| Rear Suspension: | Full floater swing arm, non-adjustable | Coil spring with damper | Link-type, fully adjustable spring preload, gas/oil damped, adjustable compression damping |
| Front Brakes: | 2 x Discs, 4 piston calipers | Drum, 125 mm | Single 280 mm disc, 2 piston caliper |
| Rear Brakes: | Single disc, 2 piston caliper | Drum, 125 mm | Single 230 mm disc, 2 piston caliper |
| Front Tyre: | 110/90-16 | 3.5 x 8" | 90/90-21 |
| Rear Tyre: | 140/90-18 | 3.5 x 8" | 120/90-17 |
| Dimensions: | Length 2090 mm / 82.3 in Width 710 mm / 28.0 in Height 1185 mm / 46.7 in | Length: 1655 mm / 65.2 in Width: 790 mm / 31.1 in | Length 2255 mm / 88.8 in Width 865 mm / 34.1 in Height 1195 mm / 47.0 in |
| Wheelbase: | 1425 mm / 56.1 in | 1130 mm / 44.5 in | 1490 mm / 58.7 in |
| Seat Height: | 780 mm / 30.7 in | 790 mm / 31.1 in | 885 mm / 34.8 in. |
| Dry Weight: | 152 kg / 334 lbs | 77.5 kg / 170.8 lbs | 147 kg /324 lbs |
| Fuel Capacity: | 15 Litres / 3.96 US gal / 3.3 Imp gal | 5 L / 1.3 US gal | 13 Liter / 3.4 US gal / 2.9 Imp gal (CA model 12 Liter / 3.2 US gal / 2.6 Imp gal) |