Harley-Davidson Harley Davidson VRSCDX Night Rod Special (2011) vs Yamaha FZ-6N (2005) vs Ducati 998 S (2002-03) vs Harley-Davidson Harley Davidson FLSTF Fat Boy (2011)
Comparison technical specifications
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| Make: | Harley-Davidson | Yamaha | Ducati | Harley-Davidson |
| Model: | Harley Davidson VRSCDX Night Rod Special | FZ-6N | 998 S | Harley Davidson FLSTF Fat Boy |
| Years: | 2011 | 2005 | 2002-03 | 2011 |
| Engine: | Four stroke, 60° V-twin, DOHC, 4 valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valve per cylinder, belt driven | Four stroke, Twin Cam 96BTM Valves Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder |
| Capacity: | 1247 cc / 76.1 cu in | 599 cc / 36.5 cu-in | 998 cc / 60.9 cu in | 1584 cc / 96 cu-in |
| Bore x Stroke: | 105 x 72 mm | 65.5 x 44.5 mm | 100 x 63.5 mm | 95.25 x 111.25 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 11.5;1 | 12.2:1 | 11.4:1 | 9.2:1 |
| Induction: | Electronic Sequential Port Fuel Injection | Group injection type fuel injection, 36mm Funnel diameter | Weber Marelli CPU 5.9M, 54mm throttle bodies, electronic fuel injection | Electronic Sequential Port Fuel Injection (ESPFI) |
| Ignition: | Digital CDI | TCI Digital CDI | Digital CDI | Single-fire, non-wasted, map-controlled spark ignition |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 116 Nm / 86 ft. lbs@ 7250 rpm | 63.1 Nm / 6.4 kgf-m @ 10000 rpm | 101 Nm / 74.4 lb-ft @ 8000 rpm | 124.7 Nm / 92 ft. lbs @ 3000 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Belt | Chain | Chain | Belt |
| Frame: | Steel perimeter upper frame w/hydroformed main rails and bolt-on lower frame rails, MIG welded | Aluminium, twin spar | Tubular steel trellis | Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded |
| Front Suspension: | Huge 49mm telescopic forks | 43mm Telescopic fork, | Showa upside down fork with 43 mm of condition pipe diameter, TiN coating | 41.3 mm telescopic, chrome dust covers |
| Rear Suspension: | Dual coil over adjustable shock | Swingarm Link less type Monocross | A arm rocker with progressively working Öhlins central shock strut | Hidden, horizontal-mounted, coil-over shock |
| Front Brakes: | 2x 300mm discs 4 piston calipers | 2x 298 mm discs | 2 x 320 mm Discs, 4 piston calipers | Single 292mm disc 4 piston caliper |
| Rear Brakes: | Single 300mm disc 4 piston caliper | Single 245 mm disc | Single 220 mm disc, 2 piston caliper | Single 292mm disc 4 piston caliper |
| Front Tyre: | 120/70ZR-19 60W | 120/70 ZR17 | 120/70 ZR17 | 140/75R17 |
| Rear Tyre: | 240/40R-18 79V | 180/55 ZR17 | 190/50 ZR17 | 200/55R17 |
| Wheelbase: | 1705 mm / 67 in | 1440 mm / 56.6 in | 1410 mm / 55.5 in | 1715 mm / 67.5 in |
| Seat Height: | Laden 650 mm / 25.6 in Unladen .678 mm / 26.7 in | 795 mm / 31.2 in | 790 mm / 31.1 in | Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in |
| Fuel Capacity: | 18.9 Litres / 5.0 US gal | 19 Litres / 5.0 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 18.9 Litres / 5.0 gal |