Harley-Davidson Harley Davidson VRSCX Screamin' Eagle/Vance & Hines NHRA Pro Stock L.E. (2007) vs Ducati Monster S2R 800 (2006) vs Moto Guzzi 1000 Strada (1990-) vs MV Agusta 99 Sport Checca (1960-69) vs SWM RS 500 R (2015)
Comparison technical specifications
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| Make: | Harley-Davidson | Ducati | Moto Guzzi | MV Agusta | SWM |
| Model: | Harley Davidson VRSCX Screamin' Eagle/Vance & Hines NHRA Pro Stock L.E. | Monster S2R 800 | 1000 Strada | 99 Sport Checca | RS 500 R |
| Years: | 2007 | 2006 | 1990- | 1960-69 | 2015 |
| Engine: | Four stroke, 60° V-twin, DOHC, 4 valve per cylinder. | Four stroke, 90° “L”t win cylinder, SOHC, desmodromic 2 valves per cylinder. | Four stroke, 90° V twin alloy, longitudinally mounted, OHV, 2 valve per cylinder, All plain bearing engine with two mains and split shell big ends. One piece forged crankshaft. Steel con-rod split across big end eye. Valve operation: Pushrod from camshaft between cylinder bases in crankcase. Clearance by screw and locknut on rocker tips | Four stroke, single cylinder, pushrod, 2 valve | Single cylinder, four stroke, DOHC, 4 valve |
| Capacity: | 1250 cc / 76.2 cu-in | 803 cc / 49.0 cu in | 949 cc / 57.9 cu-in | 98.3 cc / 5.9 cu-in | 500.8 cc / 30.56 cu in |
| Bore x Stroke: | 105 x 72 mm | 88 x 66 mm | 88 x 78 mm | 50.7 x 49 mm | 96.8 x 67.8 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 11.3;1 | 10.5:1 | 9.5:1 | 7.5:1 | 12.9:1 |
| Induction: | Electronic Sequential Port Fuel Injection | Fuel injection, 45 mm throttle body | 2x 36mm Dell'Orto carburettors | 16 mm Carburettor | EFI, Mikuni D42 |
| Ignition: | Sequential, single fire non waste spark, coil on plug | Marelli electronic | Electronic | Flywheel magneto | Electronic, inductive discharge, with adjustable advance (digital control) |
| Starting: | Electric | Electric | Electric | Kick | Electric with automatic decompressor |
| Clutch: | Nine plate wet pressure fed with integral compensation | APTC wet multiplate with hydraulic control | Double plate, dry type | Wet multiple plate clutch | Wet, multiplate, hydraulic control |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 4 Speed | 6-Speed, constant mesh |
| Final Drive: | Belt | Chain; Front sprocket 15; Rear sprocket 42 | Shaft | Chain | Chain |
| Front Suspension: | Huge 49mm telescopic forks | 43 mm Upside-down non adjustable forks | Moto Guzzi telescopic fork | Telescopic hydraulic fork | Upside-down telescopic hydraulic fork with forward axle; compression and rebound damping adjustment, Kayaba |
| Rear Suspension: | Dual coil over adjustable shock | Progressive linkage with fully adjustable Sachs monoshock with piggy back aluminum swing arm | Swing arm with hydraulic Koni shock | Swingarm with hydraulic shocks | Progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound damping adjustment (compression high & low speed), Kayaba |
| Front Brakes: | 2x 300mm discs 4 piston calipers | 2 x 300 mm Discs, 4 piston calipers | 2x 300mm discs | 123mm Drum | Ø260 mm Fixed disc with hydraulic control and floating caliper |
| Rear Brakes: | Single 300mm disc 4 piston caliper | Single 245 mm disc, 2 piston caliper | Single 270mm disc | 118mm Drum | Ø240 mm Floating disc, with hydraulic control and floating caliper |
| Front Tyre: | D207F 120/70ZR-19 60W | 120/70 - ZR17 | 110/90 V18 | 2.50-17 | 90/90-21" Michelin Competition IV |
| Rear Tyre: | D207F 240/40R18 74W | 180/55 - ZR17 | 120/90 V18 | 2.50-17 | 140/80-18" Michelin Competition IV |
| Fuel Capacity: | 18.9 Litres / 5.0 US gal | 14 Litres / 3.6 US gal | 22.5 Litres / 5,9 US gal | 14 Litres / 3.6 US gal | 7.2 L / 1.9 US gal |