Yamaha XT660R (2007) vs Suzuki RV 125 (1974-78) vs Suzuki GSX-R 600 Yoshimura (2009)
Comparison technical specifications
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| Make: | Yamaha | Suzuki | Suzuki |
| Model: | XT660R | RV 125 | GSX-R 600 Yoshimura |
| Years: | 2007 | 1974-78 | 2009 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Single cylinder, two-stroke, aluminium | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 659 cc/ 40.2 cu-in | 124 cc / 7.6 cu in | 599 c / 36.6 cub. in. |
| Bore x Stroke: | 100 x 84 mm | 56 x 50 mm | 67.0 x 42.5 mm |
| Compression Ratio: | 10.0: 1 | 6.3:1 | 12.8:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Induction: | Fuel injection, 44 mm throttle body | Mikuni VM22SH carburetor | EFI, Four 40 mm throttle bodies, 2 valves per body. S-DMS engine management system |
| Starting: | Electric | Kick | Electric |
| Max Power: | 33.8 kW / 48 hp @ 6000 rpm | 8.2 kW / 11 hp @ 6000 rpm | 93.2 kW / 125 hp @ 13500 rpm with maximum RAM air |
| Max Torque: | 58.4 Nm / 5.7 kgf-m @ 5250 rpm | 13.7 Nm / 1.4 kgf-m 10.1 lb-ft @ 5500 rpm | 67.7 Nm / 6.9 kgf-m / 49.9 ft-lb @ 11500 rpm, RAM air |
| Clutch: | Wet, multiple-disc coil spring | Wet, multi-plate | Wet, slipper, cable operated |
| Transmission: | 5 Speed | 5 Speed, constant mesh | 6 Speed, constant mesh |
| Final Drive: | Chain | Chain | #525 Chain |
| Front Suspension: | 43 mm Telescopic forks, | Telescopic fork, oil dampened | 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 |
| Front Wheel Travel: | 225 mm / 8.8 in | 140 mm / 5.5 in | 125 mm / 4.9 in. |
| Rear Suspension: | Oscillating arm standard Monocross. 200mm wheel travel | Swingarm, dual shocks, coil springs, oil dampened | Showa rear shock utilizes a 46 mm piston and a larger 16mm rod and is completely adjustable for rebound and compression |
| Front Brakes: | Single 298mm disc 2 piston caliper | Drum, internal expanding | 2 x 310 mm Discs, Tokico 4 piston calipers |
| Rear Brakes: | Single 245mm disc 1 piston caliper | Drum, internal expanding | Single 220 mm disc, Tokico 2 piston caliper |
| Front Tyre: | 90/90- 21 | 5.40-14 4PR | 120/70 ZR17 |
| Rear Tyre: | 130/80–17 | 6.70-12 4PR | 180/55 ZR17 |
| Dimensions: | Height 1230 mm / 48.4 in Length 2240 mm / 88.1 in Width 845 mm / 33.2 in | Length: 1961 mm / 77.2 in Width: 770 mm / 30.3 in Height: 1006 mm / 39.6 in | Length 2040 mm / 80.3 in. Width 715 mm / 28.1 in. Height 1125 mm / 44.7 in. |
| Wheelbase: | 1505 mm / 59.3 in | 1006 mm / 51.4 in | 1400 mm / 55.1 in. |
| Ground Clearance: | 210 mm / 8.3 in | 196 mm / 7.7 in | 130 mm / 5.1 in. |
| Fuel Capacity: | 15 Litres / 3.3 US gal | 5 Litres / 1.3 US gal / 1.1 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |