BMW R 100RT (1980-81) vs Yamaha YW 50FX Zuma (2016)
Comparison technical specifications
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| Make: | BMW | Yamaha |
| Model: | R 100RT | YW 50FX Zuma |
| Years: | 1980-81 | 2016 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | SOHC Four-stroke; three valves |
| Capacity: | 980 cc / 59.8 cub in. | 49 cc / 3.0 cu in |
| Bore x Stroke: | 94 x 70.6 mm | 38 x 43.6 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 9.5:1 | 12.0:1 |
| Induction: | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 | Mikuni 19 mm throttle body, fuel injection |
| Ignition: | Battery ignition | TCI |
| Starting: | Electric | Electric |
| Max Torque: | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm | 4.06 Nm / 0.41 kgf-m / 3.0 lb-ft @6500 rpm |
| Transmission: | 5 Speed | Automatic, CVT |
| Final Drive: | Shaft | V-belt |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | 26 mm Telescopic fork |
| Front Wheel Travel: | 200 mm / 7.8 in | 58.4 mm / 2.3" |
| Rear Suspension: | Long swinging arm with adjustable strut. | Single shock |
| Rear Wheel Travel: | 125 mm / 4.9 in | 55.9 mm / 2.2" |
| Front Brakes: | 2 x ∅260mm discs 2 piston calipers | 180 mm Hydraulic disc |
| Rear Brakes: | Simplex ∅200 mm drum | Drum |
| Front Tyre: | 3.25 H-19 | 120/90-10 |
| Rear Tyre: | 4.00 H-18 | 120/90-10 |
| Dimensions: | Length 2110 mm / 87 in Width 746 mm / 29.37 in Height 1465 mm / 57.67 in | Length: 1854 mm / 73.0" Width: 729 mm / 28.7" Height: 1095 mm / 43.1" |
| Wheelbase: | 1465 mm / 57.67 in | 1280 mm / 50.4" |
| Seat Height: | 820 mm / 32.3 in | 770 mm / 30.3" |
| Wet Weight: | 234 kg / 515 lbs | 91 kg / 201 lbs |
| Fuel Capacity: | 24 Litres / 6.3 US gal | 5.5 L / 1.44US gal |