Yamaha XS 650 (XS-2) (1972) vs Yamaha FZ 600 (1988) vs Harley-Davidson Harley Davidson FXDL/I Dyna Low Rider (1999-00) vs Harley-Davidson Harley Davidson XL 1200L Sportster Low (2006-07)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Harley-Davidson | Harley-Davidson |
| Model: | XS 650 (XS-2) | FZ 600 | Harley Davidson FXDL/I Dyna Low Rider | Harley Davidson XL 1200L Sportster Low |
| Years: | 1972 | 1988 | 1999-00 | 2006-07 |
| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. | 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 | Fur stroke, 45° V-Twin Evolution® Valve Train Pushrod-operated, OHV, 2 valves per cylinder |
| Capacity: | 653 cc / 39.8 cu in | 599 cc / 36.5 cu-in | 1449 cc / 88.4 cu-in | 1199 cc / 73.2 cu-in |
| Bore x Stroke: | 75 x 74 mm | 58.5 x 55.7 mm | 95.3 x 101.6 mm | 88.8 x 96.8 mm |
| Compression Ratio: | 8.4:1 | 10.0:1 | 8.9:1 | 9.7:1 |
| Cooling System: | Air cooled | Air cooled | Air cooled | Air cooled |
| Lubrication: | Wet sump | Wet sump | Dry sump, internally mounted, crank driven gerotor pressure and dual scavenge pump with spin on 10ì pressurized oil filter | Dry-sump |
| Induction: | 2 x Mikuni BS38 carburetors | 4X BS30 Mikuni carburetors | 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: | Battery, induction coil | Transistorized | Single-fire, non-wasted, map-controlled spark ignition | Digital CDI |
| Starting: | Kick | Electric | Electric | Electric |
| Max Torque: | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm | 44 Nm / 32.4 lb-ft @ 7500 rpm | 116.6 Nm / 86 lb-ft @ 3500rpm | 107.3 Nm / 79 lb-ft @ 4000 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Belt 70/32 ratio (68/32 ratio) | Belt |
| Rear Suspension: | Dual shock absorbers | Showa single shock | Coil over dual shock | Coil-over, dual-adjustable preload chocs |
| Front Brakes: | Single disc | 2x 269mm discs 2 piston caliper | 2x 292mm discs | Single 292mm disc 2 piston calipers |
| Rear Brakes: | Drum | Single 240mm disc 1 piston caliper | Single 292mm disc | Single 260mm disc 1 piston caliper |
| Front Tyre: | 3.50-19 | 100/90-16 | D401F 100/90-19 57H | 100/90-19 57H |
| Rear Tyre: | 4.00-18 | 120/80-18 | D401 150/80B16 71H | 150/80B16 71H |
| Fuel Capacity: | 12.5 Litres / 3.3 US gal | 16 Litres / 4.2 US gal | 17.4 Litres / 4.6 US gal | 17 Litres / 4.5 US gal |