BMW R 100RT (1980-81) vs BMW K1 (1988)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 100RT | K1 |
| Years: | 1980-81 | 1988 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | Four-stroke, horizontal in line four cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 980 cc / 59.8 cub in. | 987 cc / 60.2 cu in |
| Bore x Stroke: | 94 x 70.6 mm | 67 x 70 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 9.5:1 | 11.0:1 |
| Induction: | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 | Electronic injection, Bosch Motronic |
| Starting: | Electric | Electric |
| Max Power: | 51 kW / 70 hp @ 7000 rpm | 72.9 kW / 100 hp @ 8000 rpm (rear tyre: 70.1 k/w / 94.0 hp @ 8400 rpm) |
| Max Torque: | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm | 100 Nm / 10.2 kgf-m / 74 ft lb @ 6750 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Shaft | Shaft |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | Telescopic fork with hydraulic shock absorber |
| Rear Suspension: | Long swinging arm with adjustable strut. | Monolayer swinging arm |
| Front Brakes: | 2 x ∅260mm discs 2 piston calipers | 2 x ∅305mm discs, 4 piston calipers |
| Rear Brakes: | Simplex ∅200 mm drum | Single ∅285mm disc, 1 piston caliper |
| Front Tyre: | 3.25 H-19 | 120/70 ZR17 |
| Rear Tyre: | 4.00 H-18 | 160/60 ZR18 |
| Fuel Capacity: | 24 Litres / 6.3 US gal | 22 L / 5.8 US gal |
| Consumption Average: | 5.1 L/100km / 19.6 km/l / 46 US mpg | 5.6 /100 km / 17.8 km/l / 41.9 US mpg |
| Standing ¼ Mile: | 13.8 sec / 153 km/h / 95 mph | 11.4 sec / 192.8 km/h / 119.8 mph |
| Top Speed: | 203 km/h / 126 mph | 240.4 km/h / 149.4 mph |