BMW K 1300 R (2012) vs BMW R 90/6 (1973-76)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | K 1300 R | R 90/6 |
| Years: | 2012 | 1973-76 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. |
| Capacity: | 1298 cc / 79.2 cu in. | 898 cc / 54.8 cu in. |
| Bore x Stroke: | 80 x 64.3 mm / 3.15 x 2.53" | 90 x 70.6 mm |
| Compression Ratio: | 13.0:1 | 9.0:1 |
| Cooling System: | Liquid cooled | Air cooled |
| Induction: | Electronic fuel injection, Digital Motor Electronics with integrated knock control (BMS-K) | 2 x Bing constant depression carburetors |
| Starting: | Electric | Electric |
| Lubrication: | Wet sump | Gear driven pump |
| Clutch: | Multiple-plate clutch in oil bath, hydraulically operated | Dry single plate, with diaphragm spring |
| Max Power: | 127 kW / 173 hp @ 9250 rpm | 44.1 kW / 60 hp @ 6500 rpm |
| Max Torque: | 140 Nm / 14.3 kgf-m / 103 lb-ft @ 8250 rpm | 73 Nm / 7.44 kgf-m / 53 ft lb @ 5500 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Shaft | Shaft |
| Frame: | Bridge frame, aluminium, load-bearing engine | Double loop tubular frame with bolt on rear section |
| Front Suspension: | BMW Motorrad Duolever; central spring strut, Paralever; central spring strut with lever system | Telescopic hydraulic forks. |
| Front Wheel Travel: | 115 mm / 4.5 in. | 208 mm / 8.1 in |
| Rear Suspension: | Cast aluminium single swing arm with BMW Motorrad, spring pre-tension with infinite hydraulic adjustment | Long swinging arm with adjustable strut. |
| Rear Wheel Travel: | 135 mm / 5.3" | 125 mm / 4.9 in |
| Front Brakes: | 2 x ∅320mm discs, 4 piston calipers | Single ∅260mm disc, 1 piston caliper |
| Rear Brakes: | Single ∅265mm disc, 2 piston caliper | 200mm Drum |
| Front Tyre: | 120/70 ZR17 | 3.25 - H19 |
| Rear Tyre: | 180/55 ZR17 | 4.00 - H18 |
| Dimensions: | Length: 2228 mm / 87.7" Width (incl. morrors): 856 mm / 33.7" Height (excl. mirrors): 1095 mm / 43.1" | Length 2180 mm / 85.82 in Width 740 mm / 29.13 in Height 1080 mm / 42.5 in |
| Wheelbase: | 1585 mm / 62.4" | 1465 mm / 57.67 in |
| Seat Height: | 820 mm/ 32.3 in. (low seat 790 mm / 31.1 in) | 810 mm / 31.9 in |
| Wet Weight: | 243 kg / 536 lbs | 210 kg / 462 lbs |
| Fuel Capacity: | 19 L / 5.0 US gal | 18 Liters / 4.75 US gal |