Yamaha XJ 650 Turbo (1985-86) vs Suzuki GSX-R 600 SE (USA only) (2008) vs Suzuki GSX-R 1000 Limited Edition (UK) (2008) vs Suzuki Boulevard C109R (2008-09)
Comparison technical specifications
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| Make: | Yamaha | Suzuki | Suzuki | Suzuki |
| Model: | XJ 650 Turbo | GSX-R 600 SE (USA only) | GSX-R 1000 Limited Edition (UK) | Boulevard C109R |
| Years: | 1985-86 | 2008 | 2008 | 2008-09 |
| Engine: | Four stroke transverse four cylinder. turbocharged. DOHC, 2 valves per cylinder, | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder, TSCC | Four stroke, 54° V-Twin |
| Capacity: | 653 cc / 39.8 cu-in | 599 c / 36.6 cub. in. | 998.6 cc / 60.9 cub. in | 1786 cc / 108.8 cu. in |
| Bore x Stroke: | 63 х 52.4 mm | 67.0 x 42.5 mm | 73.4 x 59 mm | 112 X 90.5mm |
| Cooling System: | Air-cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 8.2:1 | 12.8:1 | 12.5:1 | 10.5:1 |
| Induction: | 4x 30mm pressurized Mikuni CVs carburetors | EFI, Four 40 mm throttle bodies, 2 valves per body. S-DMS engine management system | Electronic Fuel Injection with four 44mm throttle bodies | EFI, 2 x 56 mm throttle bodies |
| Ignition: | CDI | Digital CDI | Electronic ignition, Transistorized | Electronic ignition (Transistorised) |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 90 hp / 67.1 kW @ 9000 rpm　 | 93.2 kW / 125 hp @ 13500 rpm with maximum RAM air | 138 kW / 185.1 hp @ 12000rpm | 92 kW / 123 hp @ 6200 rpm |
| Max Torque: | 8.33 kgf-m @ 7000 rpm | 67.7 Nm / 6.9 kgf-m / 49.9 ft-lb @ 11500 rpm, RAM air | 117 Nm / 11.9 kgf-m / 86.3 lb.ft @ 10000rpm | 160 Nm / 16.3 kgf-m / 118 lb.ft @ 3200 rpm |
| Clutch: | Wet, multi-plate | Wet, slipper, cable operated | Hydraulically-actuated multiplate wet clutch. | Wet multi-plate type |
| Transmission: | 5 Speed | 6 Speed, constant mesh | 6 Speed, constant mesh | 5 Speed |
| Final Drive: | Shaft | #525 Chain | #530 chain | Shaft |
| Front Suspension: | 36mm Showa 140mm wheel travel, adjustments for air pressure | Inverted 41 mm Showa front forks are fully adjustable for rebound, compression and preload settings with updated rake and trail dimensions for improved cornering performance | Inverted telescopic, coil spring, oil damped, adjustable spring preload | Telescopic, coil spring, oil damped |
| Rear Suspension: | Dual Showa dampers, 79mm wheel travel, adjustments for air pressure, rebound damping | Showa rear shock utilizes a 46 mm piston and a larger 16mm rod and is completely adjustable for rebound and compression | Link type, coil spring, gas/oil damped, adjustable spring preload | Link type, coil spring, oil damped, adjustable spring preload |
| Front Brakes: | 2x 266mm discs | 2 x 310 mm Discs, Tokico 4 piston calipers | 2 x 310 mm discs 4 piston caliper | 2 x 310 mm discs, 2 piston calipers |
| Rear Brakes: | Single 200mm drum | Single 220 mm disc, Tokico 2 piston caliper | Single 220 mm disc | Single 274mm disc, 2 piston caliper |
| Front Tyre: | 3.25-19 | 120/70 ZR17 | 120/70 ZR17 | 150/80R16 |
| Rear Tyre: | 120/90 V18 | 180/55 ZR17 | 190/50 ZR17 | 240/55R16 |
| Wet Weight: | 257 kg / 566.5 lbs | 193kg / 425 lbs | 192 kg / 423 lbs | 380 kg / 837.7 lbs |
| Fuel Capacity: | 19.5 Litres / 5.0 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 17.5 Litres / 4.6 US gal / 3.8 Imp gal | 19 L / 5.0 US gal |