Suzuki GSX-R 750 (2008) vs Vespa 125 GTR (1968-78) vs KTM 640 LC4 Enduro (2005-07)
Comparison technical specifications
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| Make: | Suzuki | Vespa | KTM |
| Model: | GSX-R 750 | 125 GTR | 640 LC4 Enduro |
| Years: | 2008 | 1968-78 | 2005-07 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, ingle cylinder | Four stroke, single Cylinder. SOHC, 4 valves, engine balancer |
| Capacity: | 749 c / 45.7 cub. in. | 123.4 cc / 7.5 cub in | 624.6 cc / 38.1 cu in |
| Bore x Stroke: | 70 x 48.7 mm | 52.5 x 57 mm | 101 x 78 mm |
| Induction: | New 32 bit ECM features 1024 kilobytes of ROM for maximum engine performance working in conjunction with the new S-DMS engine management system | Disc valve | Mikuni BST 40 carburetor |
| Ignition: | Digital DC-CDI | Contact breaker & coil | Kokusan contactless DC-CDI ignition with advanced system |
| Starting: | Electric | Kick start | Electric & kick |
| Max Power: | 110.3 kW / 148 hp @ 12800 rpm | 4.6 kW / 6.3 hp @ 5000 rpm | 40.1 kW / 55 hp @ 7000 rpm |
| Clutch: | Wet, multiple discs | Wet, multiplate | Multi-disc in oil bath |
| Transmission: | 6 Speed, constant mesh | 4 Speed, grip-shift, constant mesh | 5 Speed |
| Final Drive: | Chain, RK525ROZ5Y, 116 links | Direct drive | Chain, O-ring 5/8 x 1/4" |
| Gear Ratios: | 1st 2.79 / 2nd 2.05 / 3rd 1.71 / 4th 1.50 / 5th 1.35 / 6th 1.20:1 | 1st 15.46 / 2nd 10.79 / 3rd 7.69 / 4th 5.49:1 | 1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18 |
| Frame: | Ultra-lightweight frame built entirely of aluminum alloy castings. | Pressed sheet steel, streamlined monocoque structure | Central chrome-moly steel frame |
| Front Brakes: | 2 x 310 mm Discs, radial-mount opposed-four-piston Tokico 4 piston calipers | Drum | Single 300 mm disc, 4 piston caliper |
| Rear Brakes: | Single 220 mm disc, Tokico 2 piston caliper | Drum | Single 220 mm disc, 1 piston caliper |
| Front Tyre: | 120/70 ZR17 | 3.5 x 10" | 90/90 - 21 |
| Rear Tyre: | 180/55 ZR17 | 3.5 x 10" | 140/80 - 18 |
| Wheelbase: | 1390 mm / 54.7 in. | 1220 mm / 48.0 in | 1510 mm / 59.4 in |
| Fuel Capacity: | 17 Litres / 4.5 US gal / 3.7 Imp gal | 7.7 L / 2.0 US gal | 12 L / 3.2 US gal / 2.6 Imp gal |
| Top Speed: | 270.7 km/h / 168 mph | 92 km/h / 57 mph | 168 km/h / 104 mph |