Suzuki Boulevard C90T B.O.S.S (2015-16) vs Suzuki RG 400 (1985-86) vs Yamaha XVZ 1300 Royal Star Venture S (2008-09)
Comparison technical specifications
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| Make: | Suzuki | Suzuki | Yamaha |
| Model: | Boulevard C90T B.O.S.S | RG 400 | XVZ 1300 Royal Star Venture S |
| Years: | 2015-16 | 1985-86 | 2008-09 |
| Engine: | Four stroke, 54° V-twin, SOHC, 3 valves per cylinder | Two stroke, square four cylinder, rotary valve with exhaust port valves | Four stroke, 70°V-four cylinder, DOHC, 4 valve per cylinder |
| Capacity: | 1462 cc / 89.2 cu-in | 397 cc / 24.2 cu in | 1294 cc / 78.9 cu-in |
| Bore x Stroke: | 96 x 101 mm | 50 x 50.6 mm | 79 х 66 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 9.5:1 | 7.0:1 | 10.0:1 |
| Induction: | Fuel injected | 4 x 28 mm Mikuni VM28SH Flatslide carburetors | 4x 32mm Mikuni Constant-Velocity |
| Ignition: | Digital transistorized | Suzuki PEI | Digital TCI |
| Starting: | Electric | Kick | Electric |
| Max Power: | 49.2 kW / 66 hp @ 4800 rpm | 43.1 kW / 59 hp @ 9000 rpm | 98 hp / 71.5 kW @ 4750 rpm |
| Max Torque: | 115 Nm /11.7 kgf-m / 84.8 ft-lbs @ 2800 rpm | 48 Nm / 4.9 kgf-m / 35.4 lb-ft @ 8500 rpm | 123 Nm / 90.7 lb-ft @ 4750 rpm |
| Frame: | Double cradle steel frame | Double downtube, full cradle, box section aluminium perimetre frame | Steel, Double cradle frame |
| Transmission: | 5 Speed | 6 Speed | 5 Speed |
| Final Drive: | Shaft | Chain | Shaft |
| Front Suspension: | Telescopic, coil springs, oil damped | Air adjustable fork with 38mm tubes, adjustable spring preload and anti dive valuing. | Air assisted telescopic fork |
| Rear Suspension: | Link type, coil spring, oil damped | Full floating system, shock absorber, adjustable for spring preload | Single shock, link-type w/air assist |
| Front Brakes: | Dual 300 mm discs, 4 piston caliper | 2 x 260 mm Discs, 4-piston calipers | 2x 298mm discs 4 piston calipers |
| Rear Brakes: | Single 180 mm disc, 2 piston caliper | Single 210 mm disc, 2-piston caliper | Single 320mm disc 1 piston caliper |
| Front Tyre: | 130/80-17M/C 65H, tubeless | 110/90 V16 | 150/80-16 |
| Rear Tyre: | 200/60-16M/C 79H, tubeless | 120/90 V17 | 150/90-15 |
| Wheelbase: | 1700 mm / 66.9 in | 1425 mm / 56.1 in | 1705 mm / 67.1 in |
| Ground Clearance: | 140 mm / 5.5 in | 120 mm / 4.7 in | 145 mm / |
| Seat Height: | 720 mm / 28.3 in | 770 mm / 30.3 in | 710 mm / 28.0 in |
| Fuel Capacity: | 18 Litres / 4.8 US gal | 22 Litres / 5.8 US gal / 4.8 Imp gal | 22.5 Litres / 5.9 US gal |