BMW C 650 GT (2012-13) vs Yamaha MT-01 Kenny Roberts Design (2007) vs Yamaha XS 650 Midnight Special (1981) vs Yamaha XJ 550R Sega (1981)
Comparison technical specifications
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| Make: | BMW | Yamaha | Yamaha | Yamaha |
| Model: | C 650 GT | MT-01 Kenny Roberts Design | XS 650 Midnight Special | XJ 550R Sega |
| Years: | 2012-13 | 2007 | 1981 | 1981 |
| Engine: | Four stroke, twin-cylinder, DOHC, 4 Valves per cylinder | Four stroke, 48° V-Twin cylinder, SOHC, 4 valves per cylinder. | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Four stroke, transverse four cylinder. DOHC, 2 valves per cylinder. |
| Capacity: | 647 cc / 38.5 cub in. | 1670 cc / 101.9 cu-in | 653 cc / 39.8 cu in | 528 cc / 32.2 cu-in |
| Bore x Stroke: | 79 x 66 mm | 97 x 113 mm | 75 x 74 mm | 57 X 51.8 mm |
| Compression Ratio: | 11.6:1 | 8.36:1 | 8.5:1 | 9.5:1 |
| Induction: | Fuel injection BMS-E, 38mm Throttle valve | Twin-bore fuel injection (FI) | 2 x Mikuni BS34SU carburetors | 4x 28mm Mikuni carburetors |
| Starting: | Electric | Electric | Electric and kick | Electric |
| Max Power: | 44 kW / 60 hp @ 7500 rpm | 66.3 kW / 90 hp @ 4750 rpm | 39.5 kW / 53 hp @ 7200 rpm | 37 kW / 50 PS @ 9000 rpm |
| Max Torque: | 66 Nm / 6.7 kgf-m / 48.7 lb-ft. @ 6000 rpm | 150.1Nm / 110.7lb-ft @ 3750rpm | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 5500 rpm | 41.9 Nm / 4,3 m-kg @ 7500 rpm |
| Transmission: | CVT (continuously variable transmission) | 5 Speed | 5 Speed | 6 Speed |
| Front Suspension: | System Upside down fork Ø 40 mm / 1.6 in. | Inverted telescopic fork; | Telescopic forks | Telescopic coil spring forks |
| Rear Suspension: | System Cast single swingarm. | Swingarm with fully adjustable single shock; | Dual shock absorbers | Swinging arm with dual dampers adjustable for preload |
| Front Brakes: | 2x 270mm discs 2 piston caliper, ABS | 2x 320 mm discs 4 piston calipers | Twin hydraulic discs, 267 mm | 2x 267mm discs |
| Rear Brakes: | Single 270mm disc 2 piston caliper, ABS | Single 267 mm disc 1 piston caliper | Single hydraulic disc, 267 mm | 182mm Drum |
| Front Tyre: | 120/70 R15 | 120/70 ZR18 | 3.50S-19 | 3.25-19 |
| Rear Tyre: | 160/60 R15 | 190/50 ZR17 | 130/90S-16 | 110/ 90-16 |
| Fuel Capacity: | 16 Litres / 4.2 US gal. | 15 Litres / 3.2 gal | 11.5 Litres / 3.0 US gal | 15 liters / 3.9 US gal |