Yamaha XS 650 / TX 650 (1973) vs BMW R 1150GS Adventure (2002)
Comparison technical specifications
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| Make: | Yamaha | BMW |
| Model: | XS 650 / TX 650 | R 1150GS Adventure |
| Years: | 1973 | 2002 |
| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder |
| Capacity: | 653 cc / 39.8 cu in | 1130 cc / 69 cu in |
| Bore x Stroke: | 75 x 74 mm | 101 x 70.5 mm |
| Compression Ratio: | 8.4:1 | 10.3:1 |
| Cooling System: | Air cooled | Air/Oil cooled |
| Lubrication: | Wet sump | Wet sump |
| Induction: | 2 x Mikuni BS38 carburetors | Bosch Motronic MA 2.4 Fuel injection |
| Ignition: | Battery, induction coil | Electronic ignition MA 2.2 Bosch Motronic |
| Starting: | Kick | Electric |
| Max Power: | 39.5 kW / 53 hp @ 7200 rpm | 62.5 kW / 85 hp @ 6750 rpm (rear tyre 58.9 kW / 79 hp @ 6750 rpm) |
| Max Torque: | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm | 98 Nm / 10.0 kgf-m / 71 lb-ft @ 5250 rpm |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft |
| Front Suspension: | Telescopic forks | Light. Telelever with central spring strut, progressive coil spring, twin-tube gas-filled shock, |
| Rear Suspension: | Dual shock absorbers | Patented BMW Paralever swing arm & shaft drive, single shock with variable rebound and damping adjustments |
| Front Brakes: | Single disc | 2 x 304mm discs, 4 piston calipers |
| Rear Brakes: | Drum | Single 276mm disc, 2 piston caliper |
| Front Tyre: | 3.50-19 | 110/80 R19 |
| Rear Tyre: | 4.00-18 | 150/70 R17 |
| Dimensions: | Length: 2175 mm / 85.6" Width: 905 mm / 35.0" Height: 1135 mm / 44.7" | Length 2,180 mm / 85.8 in Width 980 mm / 38.6 in Height 1,435 mm / 56.5 in |
| Wheelbase: | 1410 mm / 55.5" | 1,501 mm / 59.1 in |
| Dry Weight: | 191 kg / 420 lbs | 232 kg / 511 lbs |
| Fuel Capacity: | 12.5 Litres / 3.3 US gal | 30 Litres / 7.9 US US gal |
| Top Speed: | 185 km/h / 115 mph | 190 km/h / 118 mph |