Suzuki SP 250 (1982-84) vs Yamaha SR 400 (1981-82) vs Vespa GTS 300 HPE Touring (2019) vs Suzuki Boulevard C90T (2013-14)
Comparison technical specifications
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| Make: | Suzuki | Yamaha | Vespa | Suzuki |
| Model: | SP 250 | SR 400 | GTS 300 HPE Touring | Boulevard C90T |
| Years: | 1982-84 | 1981-82 | 2019 | 2013-14 |
| Engine: | Four stroke, single cylinder, SOHC | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | Four stroke single cylinder, SOHC, 4 valve | Four stroke, 54° V-twin, SOHC, 3 valves per cylinder |
| Capacity: | 249 cc / 15.2 cu in | 399 cc / 24.3 cu-in | 278 cc / 18.2 cub in | 1462 cc / 89.2 cu-in |
| Bore x Stroke: | 72 x 61.2 mm | 87 х 67.2 mm | 75 mm x 63 mm | 96 x 101 mm |
| Ignition: | Transistorized | CDI | Magneti Marelli MIUG4 ECU | Digital transistorized |
| Starting: | Kick | Kick | Electric | Electric |
| Max Power: | 12.7 kW / 17 hp @ 7800 rpm | 27 hp / 17.1 KW @ 7000 rpm | 17.5 kW / 23.8 hp @ 8250 rpm | 49.2 kW / 66 hp @ 4800 rpm |
| Transmission: | 5 Speed | 5 Speed | CVT with torque server | 5 Speed |
| Final Drive: | Chain | Chain | Belt | Shaft |
| Front Suspension: | Telescopic forks | 35mm Telescopic fork | Single sided form with shock | Telescopic, coil springs, oil damped |
| Rear Suspension: | Full floater | Dual shocks, 5-way adjustable preload | Mono shock | Link type, coil spring, oil damped |
| Front Brakes: | Drum | Single disc | Single 220 mm disc - ABS/ASR | Dual 300 mm discs, 4 piston caliper |
| Rear Brakes: | Drum | Drum | Single 220 mm disc - ABS/ASR | Single 180 mm disc, 2 piston caliper |
| Front Tyre: | 3.00-21 | 3.50-19 | 120/70 - 12 | 130/80-17M/C 65H, tubeless |
| Rear Tyre: | 4.60 -17 | 4.00-16 | 130/70 - 12 | 200/60-16M/C 79H, tubeless |
| Seat Height: | 826 mm / 32.5 in | 790 mm / 30.9 in | 790 mm / 31.1 in | 720 mm / 28.3 in |
| Fuel Capacity: | 9.5 Litres / 2.5 US gal / Imp 2.1 Imp gal | 12 Litres / 3.2 gal | 7 Litres / 1.8 US gal | 18 Litres / 4.8 US gal |