Harley-Davidson Harley Davidson XLS 1000 Roadster 25th Anniversary XLS (1982) vs Harley-Davidson Harley Davidson Softail Fat Boy (2014) vs Harley-Davidson Harley Davidson FLSTF/I Fat Boy Limited Edition 15th Anniversary (2005)
Comparison technical specifications
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| Make: | Harley-Davidson | Harley-Davidson | Harley-Davidson |
| Model: | Harley Davidson XLS 1000 Roadster 25th Anniversary XLS | Harley Davidson Softail Fat Boy | Harley Davidson FLSTF/I Fat Boy Limited Edition 15th Anniversary |
| Years: | 1982 | 2014 | 2005 |
| Engine: | Four stroke, 45° V-Twin, OHV, 2 valves per cylinder | Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler | 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 |
| Capacity: | 998 cc / 60.8 cu-in | 1690 cc / 103.1 cub in. | 1449 cc / 88.4 cu-in |
| Bore x Stroke: | 81 x 96.8 mm | 98.4 x 111.1 mm | 95.3 x 101.6 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 8.8;1 | 9.6:1 | 8.9:1 |
| Induction: | 38mm Keihin carburetor | Electronic Sequential Port Fuel Injection (ESPFI) | Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection |
| Ignition: | Transistorized | Single-fire, non-wasted, map-controlled spark ignition | Single-fire, non-wasted, map-controlled spark ignition |
| Starting: | Electric | Electric | Electric |
| Max Torque: | 55 ft-lb / 74 Nm @ 4000 rpm | 134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm | 116.6 Nm / 86 lb-ft @ 3500rpm |
| Transmission: | 4 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Belt | Belt |
| Frame: | Single down tube cradle | Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded | Mild steel tubular frame; rectangular section backbone; stamped, cast and forged junctions; forged fender supports; MIG welded Swingarm Mild steel, rectangular tube sections, stamped junctions, MIG welded |
| Front Suspension: | Telehydraulic forks | 41.3 mm telescopic, chrome dust covers | 41.3 mm Telescopic forks with ”beer can” covers |
| Rear Suspension: | Dual shocks swinging arm fork | Hidden, horizontal-mounted, coil-over shock | Hidden, horizontal-mounted, coil-over shock |
| Front Brakes: | 2x 254mm discs | 2x Discs 4 piston caliper | Single 292mm disc 4 piston caliper |
| Rear Brakes: | Single 292mm disc | Single disc 2 piston caliper | Single 292mm disc 4 piston caliper |
| Front Tyre: | MJ 90-19 | 140/75R17 67V | D402F MT90B16 72H |
| Rear Tyre: | MT90-16 | 200/55R17 78V | D401 150/80B16 71H |
| Wet Weight: | 249 kg / 542 lbs | 329 kg / 725 lbs | 324 kg / 714 lbs |
| Fuel Capacity: | 15 Litres / 3.9 US gal | 18.9 Litres / 5.0 US gal | 18.9 Litres / 5.0 US gal |