| General |
| Year | 2005 | 2025 |
| Make Model | Ducati 999 S | Harley Davidson Sportster S |
| Dimensions |
| Seat Height | 780 mm / 30.7 in | 765 mm / 30.1 in |
| Wheelbase | 1420 mm / 55.9 in | 1520 mm / 59.8 in |
| Ground Clearance | - | 90 mm / 3.5 in |
| Height | 1090 mm / 42.9 in | 1085 mm / 42.7 in |
| Length | 2095 mm / 82.5 in | 2270 mm / 89.42 in |
| Seat Height (Laden) | - | 734 mm / 28.9 in |
| Width | 730 mm / 28.7 in | 840 mm / 33.1 in |
| Weights & Capacities |
| Dry Weight (kg) | 199 | 221 |
| Wet Weight (kg) | - | 228 |
| Dry Weight | 199 kg / 438 lbs | 221 kg / 487 lbs |
| Fuel Capacity | 15.5 Litres / 4.1 US gal / 3.4 Imp gal | 11.7 Litres / 3.1 US gal |
| Wet Weight | - | 228 kg / 502 lbs |
| Performance |
| Top Speed | 270 km/h / 168 mph | - |
| Max Power | 100 kW / 136 hp @ 9750 rpm With racing kit: 105 kW / 143 hp @ 9750 rpm | 121 hp / 90 kW @ 7500 rpm |
| Max Torque | 106 Nm / 10.8 kgf-m / 78.1 ft-lb @ 8000rpm With racing kit: 111.8 Nm / 11.4 kgf-m / 82.5 ft-lb @ 8000 rpm | 126 Nm / 93 lb-ft @ 6000 rpm |
| Standing Start ¼ Mile | 11.0 sec | - |
| Engine |
| Displacement | 998 cc / 60.9 cu in | 1252 cc / 76.4 cu-in |
| Engine Detail | Four stroke, 90° °L° twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder |
| Bore x Stroke | 100 x 63.5 mm | 105 x 72.3 mm |
| Compression Ratio | 11.4:1 | 12.0:1 |
| Cooling System | Liquid cooled | Liquid cooled |
| Engine Oil Specification | Synthetic, 10W/40 | - |
| Exhaust | Single steel muffler with catalytic converter | 2-into-1-into-2, catalyst in muffler |
| Fuel Consumption | 5.56 L/100 km / 18 km/l / 42.3 US mpg / 50.8 Imp mpg | - |
| Fuel Induction | Weber Marelli electronic fuel injection, 54 mm throttle body | Electronic Sequential Port Fuel Injection (ESPFI) |
| Ignition | Marelli electronic | - |
| Lubrication | Wet sump | Semi-dry sump |
| Spark Plug | Champion RG4HC | - |
| Starter | Electric | Electric |
| EV Specifics |
| Battery Capacity | 12V 10Ah | - |
| Drivetrain |
| Clutch | Dry multiplate with hydraulic control | Mechanical, 8 plate wet, assist & slip, 1090N |
| Final Drive | Chain | Belt, 34/80 ratio |
| Final Drive Ratio | 2.400:1 (15/36) | - |
| Gear Ratios | 1st 2.466 / 2nd 1.765 / 3rd 1.400 / 4th 1.182 / 5th 1.043 / 6th 0.958:1 | 1st 12.21 / 2nd 9.022 / 3rd 6.994 / 4th 5.641 / 5th 4.731 / 6th 4.131 |
| Primary Drive | - | Gear, 49/89 ratio |
| Primary Drive Ratios | Straight cut gears, 1.84:1 | - |
| Transmission / Drive | 6 Speed | 6 Speed |
| Chassis |
| Frame Type | Tubular steel trellis | Stressed-member, high strength low alloy steel trellis frame; stamped, cast, and forged junctions; MIG welded; aluminum forged mid-structure |
| Suspension - Front | Öhlins 43mm upside-down fully adjustable fork with TiN surface treatment | 43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminium fork triple clamps |
| Suspension - Rear | Progressive linkage with fully adjustable Öhlins monoshock | Linkage-mounted, piggyback monoshock with compression, rebound and hydraulic spring preload adjustability |
| Fork Angle | - | 28° |
| Lean Angle | - | 35° |
| Rake | 23.5° - 24.5° | 30° |
| Swingarm | - | High strength low alloy steel, tubular sections, stamped x-member, forged axle junctions; MIG welded |
| Trail | 97 mm / 3.8 in | 148 mm / 5.8 in |
| Wheel Travel - Front | 120 mm / 4.7 in | 92 mm / 3.6 in |
| Wheel Travel - Rear | 128 mm / 5 in | 82 mm / 3.2 in |
| Wheels & Brakes |
| Brakes - Front | 2 x 320 mm Discs, 4 piston calipers | Single 320mm rotor, radially mounted, monoblock, 4-piston caliper |
| Brakes - Rear | Single 245mm disc, 2 piston caliper | Single 260mm solid uniform expansion rotor, floating single piston caliper |
| ABS | - | Standard |
| Rims - Front | - | 4.5 x 17 |
| Rims - Rear | - | 5.0 x 16 |
| Tyres - Front | 120/70 ZR17 | 160/70TR17 73V Dunlop- Harley-Davidson Series, radial, GT503 |
| Tyres - Rear | 190/50 ZR17 | 180/70R16 77V Dunlop- Harley-Davidson Series, radial, GT503 |
| Wheels | - | Aluminum cast, satin black |
| Wheels - Front | Y-shaped 5-spoke light alloy 3.50 x 17 | - |
| Wheels - Rear | Y-shaped 5-spoke light alloy 5.50 x 17 | - |