BMW C 400X (2020) vs Ducati 900 S2 (1984)
Comparison technical specifications
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| Make: | BMW | Ducati |
| Model: | C 400X | 900 S2 |
| Years: | 2020 | 1984 |
| Engine: | Four stroke, Single cylinder, SOHC, 4 Valves, with rocker arm. | Four stroke, 90°“L”twin cylinder, SOHC, 2 valves per cylinder, bevel gear driven |
| Capacity: | 350 cc / 21.3 cub in. | 864 cc / 52.7 cu in |
| Bore x Stroke: | 80 x 69.6 mm | 86 x 74.4 mm |
| Compression Ratio: | 11.5:1 | 9.3:1 |
| Induction: | Fuel injection, BMS-E2 40mm throttle valve diameter | 2 x Dell'Orto PHF 30A or PHM 40B carburetors / 32mm Dell'Orto PHF |
| Starting: | Electric, 500 kW | Electric |
| Battery: | 12/9 V/Ah | Yuasa 19Ah |
| Max Power: | 25.3 kW / 34 hp @ 7500 rpm | 58.8 kW / 80 hp @ 7500 rpm |
| Max Torque: | 34.3 Nm / 25.8 lb-ft @ 6000 rpm | 86 Nm / 8.8 kgf-m / 63.5 ft-lb @ 5800 rpm |
| Clutch: | Centrifugal clutch | Wet, multiplate |
| Transmission: | Continuously variable CVT belt transmission | 5 Speed |
| Final Drive: | Gear reduction cog wheel pairing | Chain |
| Front Suspension: | 35mm Telescopic forks. | 38 mm Marzocchi telescopic fork |
| Rear Suspension: | Aluminum double-sided swing arm, double spring strut, adjustable spring preload | Marzocchi ET85 dual shocks, 5-way adjustable |
| Front Brakes: | 2x 265mm Rigid discs 4 piston caliper. | 2 x 280 mm Disc, 1 piston caliper |
| Rear Brakes: | Single 265mm disc 1 piston caliper. | Single 280 mm disc |
| Dimensions: | Length 2210 mm / 87 in Width 833 mm / 32.8 in | Length: 2200 mm / 86.6 in Width: 700 mm / 27.6 in Height: 1250 mm / 49.2 in |
| Seat Height: | 775 mm / 30.5 in | 840 mm / 33.1 in |
| Fuel Capacity: | 12.8 Litres / 3.4 US gal | 18 L / 4.8 US gal / 4.0 Imp gal |