Ducati 750 Sport (1989-90) vs Harley-Davidson Harley Davidson FLHRS/I Road King Custom (2006) vs Harley-Davidson Harley Davidson XL 1200X Forty-Eight (2010)
Comparison technical specifications
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| Make: | Ducati | Harley-Davidson | Harley-Davidson |
| Model: | 750 Sport | Harley Davidson FLHRS/I Road King Custom | Harley Davidson XL 1200X Forty-Eight |
| Years: | 1989-90 | 2006 | 2010 |
| Engine: | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | 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, 45° V-Twin, OHV, 2 valves per cylinder. |
| Capacity: | 748 cc / 45.6 cu-in | 1449 cc / 88.4 cu-in | 1199 cc / 73.2 cu in. |
| Bore x Stroke: | 88 x 61.5 mm | 95.3 x 101.6 mm | 88.8 x 96.8 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 10:1 | 8.9:1 | 9.7:1 |
| Induction: | Weber 44DCNF 113 | Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection | Electronic Sequential Port Fuel Injection (ESPFI) |
| Ignition: | Kokusan electronic | Single-fire, non-wasted, map-controlled spark ignition | Digital CDI |
| Starting: | Electric | Electric | Electric |
| Max Torque: | 70 Nm / 7.1 kgf-m / 51.6 ft-lb @ 6500 rpm | 116.6 Nm / 86 lb-ft @ 3500rpm | 107 Nm / 10.9 kgf-m / 79 ft/lbs./ @ 3500 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | Chain | Belt | Belt |
| Front Suspension: | 40 mm Marzocchi M1BB telescopic fork | 41.3 mm, telescopic | ∅39mm Fork |
| Rear Suspension: | Marzocchi PBS1R monoshock, cantilever swingarm | Short, air-adjustable | Coil-over; preload dual-adjustable |
| Front Brakes: | 2 x 280mm Discs, 2 piston calipers | 2x 292mm discs 4 piston calipers | Single ∅300mm disc, 2 x ∅38mm piston calipers |
| Rear Brakes: | Single 270 mm disc, 2 piston caliper | Single 292mm disc 4 piston caliper | Single ∅300mm disc, 2 x ∅38mm piston calipers |
| Front Tyre: | 130/60-16 | D402F MT90B16 72H | MT90B16 |
| Rear Tyre: | 160/60-16 | D402 MU85B16 77H | 150/80-B16 |
| Wheelbase: | 1450 mm / 57.1 in | 1613 mm / 63.5 in | 1520 / 59.8 in |
| Seat Height: | 750 mm / 29.5 in | 718.8 mm / 28.3 in | Laden 660 mm / 26.0 in Unladen 681 mm / 26.8 in. |
| Wet Weight: | 191 kg / 421 lbs | 344 kg / 757 lbs | 257.2 kg / 567 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal / 3.7 Imp gal | 19 Litres / 5.0 US gal | 13.7 L / 3.6 US gal |