BMW R 1200ST (2006) vs Yamaha XT 660X (2014)
Comparison technical specifications
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| Make: | BMW | Yamaha |
| Model: | R 1200ST | XT 660X |
| Years: | 2006 | 2014 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valve |
| Capacity: | 1170 cc / 71.4 cu in | 659 cc/ 40.2 cu-in |
| Bore x Stroke: | 101 x 73 mm | 100 x 84 mm |
| Cooling System: | Air/Oil-cooled | Liquid cooled |
| Compression Ratio: | 11.0:1 | 10: 1 |
| Induction: | BMW engine management, BMS-K | Fuel injection, 44 mm throttle body |
| Ignition: | Digital engine management | TCI |
| Starting: | Electric | Electric |
| Max Power: | 81 kW / 110 hp @ 7500 rpm | 33.8 kW / 48 hp @ 6000 rpm |
| Max Torque: | 115 Nm / 11.7 kgf-m / 85 lb-ft @ 6000 rpm | 58.4 Nm / 5.7 kgf-m @ 5250 rpm |
| Clutch: | Single dry plate clutch, hydraulically | Wet, multiple-disc coil spring |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | System enclosed driveshaft with two universal joints | Chain |
| Frame: | Three-section frame consisting of front and rear section, load bearing engine-gearbox unit | Steel tubular diamond frame with dual tank rails |
| Front Suspension: | Three-section frame consisting of front and rear section, load bearing engine-gearbox unit | 43 mm Telescopic forks, |
| Front Wheel Travel: | 110 mm / 4.3 in | 225 mm / 8.8 in |
| Rear Suspension: | BMW Motorrad Telelever, stanchion diameter 35mm, central spring strut, rebound damping electronically adjustable with standard ESA | Oscillating arm standard Monocross. |
| Rear Wheel Travel: | 140 mm / 5.5 in | 200 mm / 7.9 in |
| Front Brakes: | 2 x 305 mm Discs, 4 piston calipers | Single 320mm disc 4 piston caliper |
| Rear Brakes: | Single 265mm disc, 2 piston caliper | Single 245mm disc 1 piston caliper |
| Front Tyre: | 120/70 ZR17 | 120/700-17 |
| Rear Tyre: | 180/55 ZR17 | 160/60-17 |
| Dimensions: | Length 2165 mm / 85.2 in Width 890 mm / 35.0 in (incl. mirrors) Height 1220 mm / 48.0 in (excl. mirrors) | Height 1170 mm / 461 in Length 2175 mm / 85.6 in Width: 860 mm / 33.9 in |
| Wheelbase: | 1495 mm / 59.1 in | 1505 mm / 59.3 in |
| Seat Height: | 826 mm - 806 mm / 32.5 in - 31.7 in 780 mm / 800 mm / 30.7 - 31.4 in (special equipment low seat bench) | 875mm / 34.4 in |
| Dry Weight: | 205 kg / 451.9 lbs | 173 kg / 318.4 lbs |
| Wet-Weight: | 229 kg / 504.8 lbs | 186 kg / 410.1 lbs |
| Fuel Capacity: | 21 Liters / 5.5 US gal | 15 Litres / 3.9 gal |