| 2005 | Night Rod as a cross between a V-Rod and Street Rod |
| 2003 | 100 years Harley Davidson |
| 2002 | V-Rod with DOHC-Twin, liquid cooling (development aid Porsche) |
| 1993 | Dyna Wide Glide, HD 90 years |
| 1992 | Fifth Grand National Championship in succession |
| 1991 | Five-speed sportster, belt drive |
| 1990 | FLSTF Fat Boy (nostalgia) |
| 1987 | Electra Glide Sport |
| 1986 | Harley-Davidson becomes a public company |
| 1986 | Sportster Evolution (883 cm³) |
| 1984 | Evolution generation, 1340 cm³, again HD police bikes |
| 1982 | US customs to about 700 cm³ motors increases from 4,4% to 49,4% |
| 1982 | Soft engine suspension (Super Glide II), five-speed |
| 1981 | Manager buy with high yield credit from Citybank and equity the company back from AMF |
| 1979 | End two-stroke sales |
| 1978 | Sale of Aermacchi to Cagiva |
| 1978 | Electra Glide with 1340 cm³ |
| 1977 | XLCR Cafe Racer (<- Sportster), FXS Low Rider (<-Super Glide) |
| 1975 | Stopping production Sprint |
| 1974 | 250-cm³ world champion (Walter Villa) |
| 1973 | 250-cm³ world champion (Walter Villa) |
| 1972 | Sportster with 1000 cm³ |
| 1972 | American championship (XR 750) |
| 1972 | Front disc brake |
| 1971 | FX Super Glide, 1200 cm³ |
| 1970 | 426-km/h world record |
| 1970 | KR -> (aluminum-)XR |
| 1969 | American Machine and Faundry take over HD |
| 1968 | Speed record at Daytona |
| 1967 | Sportster with electric start |
| 1966 | Electra Glide with electric start |
| 1965 | 50-cm³-Aermaccchi of HD |
| 1965 | 250-cm³ world record (285 km/h) |
| 1963 | Son of William Davidson -> chief designer |
| 1962 | 64-cm³ two-stroke scooters (Topper) |
| 1960 | Acquisition of Italian firm Aermacchi, HD with 250-cm³ four-stroke engine |
| 1960 | More race wins with KR |
| 1959 | First Japanese mini-motorbikes |
| 1959 | More race wins |
| 1958 | Duo-Glide with rear swing arm, hydraulic brake |
| 1957 | XL Sportster, OHV |
| 1956 | Another victory in the Jack-Pine-Tour |
| 1954 | K model -> KH model |
| 1952 | Models K and KR (race version), 750-cm³-SV |
| 1952 | Clutch operated now by hand, gear with the foot |
| 1950 | Arthur Davidson died as the last of the four company founders |
| 1949 | Hydra-Glide, telescopic fork |
| 1947 | A new beginning with pre-war production |
| 1947 | First headlines of later 'Rocker' called gangs |
| 1945 | End Second World War |
| 1943 | Bill Harley died |
| 1942 | Walter Davidson died |
| 1941 | End of production for civilian purposes |
| 1940 | Aluminum cylinder heads, especially engines for military |
| 1940 | Export of motorcycles (UK and USSR) |
| 1939 | Begin Second World War |
| 1937 | Death of William Davidson |
| 1937 | 219-km/h world record |
| 1935 | OHV-Knucklehead, 1000 cm³ |
| 1935 | Anew race win (Dirt-Track) |
| 1933 | Motorcycle sales collapsed completely |
| 1931 | Tricycle as service-car |
| 1930 | Race win Jack-Pine-Tour |
| 1929 | Black Friday, world economic crisis |
| 1929 | Cylinder heads (Patent Ricardo) in 500-cm³ single-cylinder and D, DL and DLD twin-cylinder |
| 1929 | Model WL, SV, 750 cm³ (290 Dollar) |
| 1929 | Davidson of the next generation |
| 1928 | JD model with 2 camshafts in bottom position |
| 1927 | Ca. 20.000 motorcycles sold |
| 1926 | Sold more than 23.000 motorcycles |
| 1925 | New tank design, streamlined, 500-cm³ single, SV |
| 1925 | Approx. 17.000 motorcycles sold |
| 1924 | Approx. 14.000 motorcycles sold |
| 1923 | End Harley with boxer engine |
| 1923 | Harley racing team dissolved |
| 1923 | Sold over 18.000 motorcycles |
| 1922 | Model F, 1200 cm³, SV, 13 kW (18 HP) |
| 1922 | Ca. 13.000 motorcycles sold |
| 1921 | Only 10.000 sidecars and motorcycles sold |
| 1920 | Depression and prohibition begin |
| 1920 | Tin Lizzy price below $ 400 competes with motorcycles |
| 1920 | Speed records, Harley in 67 countries |
| 1920 | Approx. 28.000 motorcycles sold |
| 1919 | Harley with 600-cm³ boxer engine, economic failure |
| 1919 | Just under 40.000 motor cycles and sidecars |
| 1918 | End First World War, more than 26,000 special motorcycles delivered |
| 1918 | Production stop single cylinder |
| 1917 | War entry USA |
| 1916 | The Enthusiast - regular newspaper for HD customers, huge service network created in USA |
| 1915 | Great success in Speed Bowl race |
| 1915 | Four-valve racing engine (Ricardo-Patent) with 1000 cm³, up to 40 kW (55 HP) |
| 1915 | Series receives three-speed and clutch in front |
| 1914 | Begin First World War |
| 1914 | Exports GB, NL, deliveries to the military |
| 1914 | Kick Starter, internal expanding brake rear |
| 1913 | Three-wheel motorcycle-van, 574-cm³ single (5 HP) in addition |
| 1913 | William Ottaway as a designer and racing manager |
| 1913 | Just under 13.000 motorcycles manufactured |
| 1912 | Rear wheel hub with two-speed gearbox, chain drive on demand, spring in the saddle tube |
| 1912 | Just under 10.000 motorcycles manufactured |
| 1911 | V2-inlet valve cam-controlled now, more power, improved lubrication |
| 1911 | Coupling instead of (de-) tensioning the belt drive |
| 1911 | More than five and a half thousand motorcycles sold |
| 1910 | Factory (Juneau Avenue) significantly expanded |
| 1910 | More than three thousand motorcycles sold |
| 1909 | First V2-engine (45°), 850 cm³, 5 kW (6,5 HP) |
| 1909 | Victory in the 500-km race (Walter Davidson) |
| 1909 | Frame with more wheel base, improved suspension and engine, now with Schebler carburetor |
| 1909 | More than eleven hundred motorcycles sold |
| 1908 | First race wins (Walter Davidson) with prototype 1000-cm³-twin |
| 1908 | Four hundred fifty motorcycles sold, first police Harleys |
| 1907 | Bill Harley completed engineering studies successfully |
| 1907 | Harley-Davidson Motor Company founded |
| 1907 | More than hundred fifty motorcycles sold |
| 1906 | Two floors wooden house (Juneau Avenue), Uncle James McLay financed |
| 1906 | Davidson brothers Arthur and William join the company. |
| 1906 | Fifty motorcycles sold, first employees |
| 1905 | Five motorcycles sold |
| 1905 | Walter Davidson became the first full-time for the new company |
| 1904 | Three other specimens of similar design |
| 1903 | Bill Harley will begin engineering studies |
| 1903 | Framework in own construction created in the woodshed holds allegedly 100.000 miles |
| 1902 | First 400-cm³ engine (3 HP) |
| 1902 | Walter Davidson machinist (Chicago-Milwaukee-railway) |
| 1901 | Later the main competitor Indian founded |
| 1900 | Attempted reconstruction of a European internal combustion engine (De Dion) |
| 1898 | Harley draftsman (metal factory) |
| 1895 | Harley mechanic after leaving school (bicycle factory) |
| 1881 | Arthur Davidson born |
| 1880 | William P. (Bill) Harley was born as the son of English immigrants |
| 1877 | Walter Davidson was born as the son of a Scottish craftsman |