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) vs Hyosung GV 650 Aquila (2007-09)

Comparison technical specifications

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Make:	Ducati	Harley-Davidson	Ducati	Moto Guzzi	Hyosung
Model:	Supersport 950 S	Harley Davidson FXSTD/I Softail Deuce	748 SPS	850GT	GV 650 Aquila
Years:	2021	1999-01	1998-99	1970-71	2007-09
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	Four stroke, 90° V twin, DOHC, 4 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	647 cc / 39.4 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	81.5 x 62 mm
Compression Ratio:	12.6:1	8.9:1	11.6:1	9.2:1	11.4:1
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	2x 38 mm Carburettor
Ignition:	Electronic	Single-fire, non-wasted, map-controlled spark ignition	Electronic	Battery with double contact breaker with automatic advance	Digital CDI
Starting:	Electric	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	72.1 hp / 52.4 kW @ 9000 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	61.2 Nm / 6.28 kgf-m @ 7500 rpm
Transmission:	6-Speed with Ducati Quick Shift (DQS) up/down EVO	5 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Chain, front sprocket 15, rear sprocket 43	Belt	Chain, 520 VL4 - 5/8" x 1/4"	Shaft	Belt
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	41mm upside down 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	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	2x 300mm discs
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	Single 230mm disc
Front Tyre:	120/70 ZR17 Pirelli Diablo Rosso III	MH90-21 54H	120/60 ZR17	4.00-18	110/70-17 54H
Rear Tyre:	180/55 ZR17 Pirelli Diablo Rosso III	160/70B17 73V	180/55 ZR17	4.00-18	180/55-17 69H
Dry Weight:	184 kg / 405 lbs	292.7 kg / 644.6 lbs	198 kg / 436 lbs	211 kg / 465 lbs	218 kg / 480 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	15 Litres / 4.2 US gal