Triumph Speed 400 (2024) vs Suzuki Boulevard M50 (2010-11) vs Suzuki RH 250X (1987)
Comparison technical specifications
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| Make: | Triumph | Suzuki | Suzuki |
| Model: | Speed 400 | Boulevard M50 | RH 250X |
| Years: | 2024 | 2010-11 | 1987 |
| Engine: | Four stroke, DOHC, single cylinder, 4 valves | Four stroke, 45° V-Twin | Two stroke, single cylinder |
| Capacity: | 398 cc / 24.3 cu-in | 805cc / 49.1 cu-in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 89.0 x 64.0mm | 83 x 74.4 mm | 70 x 64.8 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Bosch ride-by-wire EFI | Mikuni BDSR34 | Mikuni VM 32 SS carburetor |
| Starting: | Electric | Electric | Kick |
| Max Power: | 29.4 kW / 40hp @ 8000 rpm | 39 kW / 52 hp / @ 6000 rpm | 23.1 kW / 31 hp @ 7500 rpm |
| Max Torque: | 38 Nm / 28 ft-lbs @ 6500 rpm | 69 Nm / 7.0 kgf-m / 51 lb-ft @ 3200 rpm | 31.2 Nm / 3.18 kgf-m / 23.0 lb-ft @ 6500 rpm |
| Clutch: | Wet multiplate with assist and slip functions | Wet, multiple discs, cable operated | Wet, multi-plate |
| Transmission: | 6-Speed | 5 Speed | 6 Speed |
| Final Drive: | X-ring chain | Shaft | Chain |
| Front Suspension: | 43mm Showa Big Piston, non-adjustable inverted fork | Inverted, telescopic, coil spring, oil damped | Telescopic forks, oil dampened |
| Rear Suspension: | Single shock, fixed damping with the shock adjustable piggy-back reservior | Link-type, oil damped, 7-way adjustable spring preload | Full floater mono shock, preload adjustable |
| Front Brakes: | Single 300 mm disc with radially mounted 4-piston caliper | Single 300 mm disc, 2 piston caliper | Single disc |
| Rear Brakes: | Single 230 mm disc with floating caliper | Drum | Drum |
| Front Tyre: | 110/70 x R17 | 130/90-16 | 3.00-21 |
| Rear Tyre: | 150/60 x R17 | 170/80-15 | 130/80-17 |
| Fuel Capacity: | 13 Litres / 3.43 US gal | 15.5 Litres / 4.1 / 3.4 US/Imp gal | 12 Litres / 3.2 US gal / 2.6 Imp gal |