Suzuki Boulevard C109R (2010-11) vs Suzuki Boulevard C90 B.O.S.S (2015-16) vs Suzuki Boulevard M50 (2010-11) vs Suzuki RH 250X (1987)
Comparison technical specifications
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| Make: | Suzuki | Suzuki | Suzuki | Suzuki |
| Model: | Boulevard C109R | Boulevard C90 B.O.S.S | Boulevard M50 | RH 250X |
| Years: | 2010-11 | 2015-16 | 2010-11 | 1987 |
| Engine: | Four stroke, 54° V-Twin | Four stroke, 54° V-twin, SOHC, 3 valves per cylinder | Four stroke, 45° V-Twin | Two stroke, single cylinder |
| Capacity: | 1786 cc / 108.8 cu. in | 1462 cc / 89.2 cu-in | 805cc / 49.1 cu-in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 112 X 90.5mm | 96 x 101 mm | 83 x 74.4 mm | 70 x 64.8 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | EFI, 2 x 56 mm throttle bodies | Fuel injected | Mikuni BDSR34 | Mikuni VM 32 SS carburetor |
| Ignition: | Electronic ignition (Transistorised) | Digital transistorized | Electronic | Suzuki PEI |
| Starting: | Electric | Electric | Electric | Kick |
| Max Power: | 92 kW / 123 hp @ 6200 rpm | 49.2 kW / 66 hp @ 4800 rpm | 39 kW / 52 hp / @ 6000 rpm | 23.1 kW / 31 hp @ 7500 rpm |
| Max Torque: | 160 Nm / 16.3 kgf-m / 118 lb.ft @ 3200 rpm | 115 Nm /11.7 kgf-m / 84.8 ft-lbs @ 2800 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 |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Shaft | Shaft | Shaft | Chain |
| Front Suspension: | Telescopic, coil spring, oil damped | Telescopic, coil springs, oil damped | Inverted, telescopic, coil spring, oil damped | Telescopic forks, oil dampened |
| Rear Suspension: | Link type, coil spring, oil damped, adjustable spring preload | Link type, coil spring, oil damped | Link-type, oil damped, 7-way adjustable spring preload | Full floater mono shock, preload adjustable |
| Front Brakes: | 2 x 310 mm discs, 2 piston calipers | Dual 300 mm discs, 4 piston caliper | Single 300 mm disc, 2 piston caliper | Single disc |
| Rear Brakes: | Single 274mm disc, 2 piston caliper | Single 180 mm disc, 2 piston caliper | Drum | Drum |
| Front Tyre: | 150/80R16 | 130/80-17M/C 65H, tubeless | 130/90-16 | 3.00-21 |
| Rear Tyre: | 240/55R16 | 200/60-16M/C 79H, tubeless | 170/80-15 | 130/80-17 |
| Fuel Capacity: | 19 L / 5.0 US gal | 18 Litres / 4.8 US gal | 15.5 Litres / 4.1 / 3.4 US/Imp gal | 12 Litres / 3.2 US gal / 2.6 Imp gal |