| 1980-82 | Electronic box |
| 1981 | AMF sells Harley |
| 1982 | 3rd Generation lighter frame |
| 1983 | VOES & Elect box Ignition |
| 1983 | 6-coil spring clutch |
| 1983 | 156 watt generator |
| 1983 | New XR-1000 model w/dual |
| | 36mm Dellorto carbs |
| 1984-late | Alternator |
| 1984-late | Diaphragm spring clutch |
| 1985 | Last Ironhead |
| 1986 | 1st Evo Sportster; 883cc & |
| | 1100cc w/aluminum heads |
| | & cylinders, hyd. lifters, 34mm |
| | Keihin carb, XLX frame |
| 1988 | 1200cc Evo Engine replaces |
| | the1100cc engine |
| 1988 | 40mm Keihin Constant |
| | Velocity CV carb |
| 1988 | 39mm forks replace 35mm |
| 1991 | Five-speed transmission |
| | replaces four-speed |
| 1991 | New-style hydraulic lifters |
| 1991 | Alternator moved from |
| | behind clutch to crankshaft |
| 1991 | Integrated lifter blocks & |
| | one-piece pushrod tubes |
| 1993 | Belt drive on all models |
| 1995 | Vacuum-operated petcock |
| 1998 | Single-fire Ignition System |
| 2000 | Pressed-together crankshaft |
| 2004 | Rubber mounted engine |
| 2004 | Trans trap door eliminated |
| 2004 | 150mm rear tire |
| 2007 | Electronic Fuel Injection |
SourcesHarley-Davidson Motor Company3700 W. Juneau Ave.Milwaukee, WI 53208414-342-4680www.harley-davidson.comBuddy Stubbs Arizona Harley-DavidsonMotorcycle Museum13850 N Cave Creek RdPhoenix, AZ 85022602-971-3400www.buddystubbs.comMotorcycle Hall of Fame Museum13515 Yarmouth Dr.Pickerington, Ohio 43147614-856-2222www.motorcyclemuseum.org