Ducati Supersport 950 S (2021) vs Harley-Davidson Harley Davidson FXSTD/I Softail Deuce (1999-01) vs Ducati 748 SPS (1998-99) vs Moto Guzzi 850GT (1970-71)
Comparison technical specifications
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| Make: | Ducati | Harley-Davidson | Ducati | Moto Guzzi |
| Model: | Supersport 950 S | Harley Davidson FXSTD/I Softail Deuce | 748 SPS | 850GT |
| Years: | 2021 | 1999-01 | 1998-99 | 1970-71 |
| Engine: | Testastretta 11°, L-Twin cylinder, 4 valve per cylinder, Desmodromic | Four stroke, 45° V-Twin, Twin Cam 88® vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | Four stroke, 90° V twin, longitudinally mounted, OHV, 2 valve per cylinder |
| Capacity: | 937 cc / 57.2 cu in | 1449 cc / 88.4 cu-in | 748 cc / 45.6 cu in | 844 cc / 51.5 cu-in |
| Bore x Stroke: | 94 x 67.5 mm | 95.3 x 101.6 mm | 88 x 61.5 mm | 83 x 78 mm |
| Compression Ratio: | 12.6:1 | 8.9:1 | 11.6:1 | 9.2:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled | Air cooled |
| Induction: | Electronic fuel injection system, 53 mm throttle bodies with full Ride-by-Wire | Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection | Weber I.A.W. CPU 1.6M | 2x 36mm Dell'Orto VHB |
| Ignition: | Electronic | Single-fire, non-wasted, map-controlled spark ignition | Electronic | Battery with double contact breaker with automatic advance |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 81 kW / 110 hp @ 9000 rpm | 67 hp / 48.8 kW @ 5200 rpm | 72.1 kW / 98 hp @ 1100 rpm | 84 hp / 62.6 kW @ 6500 rpm |
| Max Torque: | 93 Nm / 69 ft-lb @ 6500 rpm | 116.6 Nm / 86 lb-ft @ 3500rpm | 75 Nm / 7.65 kg-m /55.3 ft-lb @ 8700 rpm | 54.2 ft-lb / 7.5 kgf-m @ 5800 rpm |
| Transmission: | 6-Speed with Ducati Quick Shift (DQS) up/down EVO | 5 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain, front sprocket 15, rear sprocket 43 | Belt | Chain, 520 VL4 - 5/8" x 1/4" | Shaft |
| Front Suspension: | Fully adjustable 48 mm USD Öhlins fork with TiN treatment | 41.3 mm telescopic, “beer can” covers | Inverted type, 43 mm diameter stanchions, Showa GD051, fully adjustable | Telescopic forks |
| Rear Suspension: | Progressive linkage with fully adjustable Öhlins monoshock. Aluminum single-sided swingarm. | Hidden, horizontal-mounted, coil-over shock | Progressive linkage with adjustable monoshock, Showa GD052-007-02 | Dual shocks |
| Front Brakes: | 2 x 320 mm Semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-piston, radial pump with Bosch Cornering ABS. Self bleeding master cylinder | Single 292mm disc 4 piston caliper | 2 x 320mm Discs, 4 piston calipers, Brembo | Single 300mm disc |
| Rear Brakes: | 245 mm disc, 2-piston caliper, Bosch Cornering ABS | Single 292mm disc 4 piston caliper | Single 220 mm disc, 1 piston caliper, Brembo | Drum |
| Front Tyre: | 120/70 ZR17 Pirelli Diablo Rosso III | MH90-21 54H | 120/60 ZR17 | 4.00-18 |
| Rear Tyre: | 180/55 ZR17 Pirelli Diablo Rosso III | 160/70B17 73V | 180/55 ZR17 | 4.00-18 |
| Dry Weight: | 184 kg / 405 lbs | 292.7 kg / 644.6 lbs | 198 kg / 436 lbs | 211 kg / 465 lbs |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 18.5 Litres / 4.9 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 25 Litres / 6.6 US gal |