The KTM 640 Duke II is a single-cylinder supermoto-styled naked bike from KTM, famous for its stacked twin headlights. It uses a liquid-cooled 625cc LC4 single in a light chassis.
Wild, light and torquey, it became a cult bike for wheelies and back-road fun. Rivals included the Ducati Monster and Husqvarna SM 610.
| Year | Photo | Engine | Power | Weight | Seat | Fields |
|---|---|---|---|---|---|---|
| 2007 | ![]() |
625 cc | 53.6 hp | 152 kg | 900 mm | 42 |
| 2006 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 43 |
| 2005 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 43 |
| 2004 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 39 |
| 2003 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 43 |
| 2002 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 43 |
| 2001 | ![]() |
625 cc | 55 hp | 145 kg | 860 mm | 43 |
| 2000 | ![]() |
625 cc | 49 hp | 145 kg | 880 mm | 43 |
| 1999 | ![]() |
625 cc | 60 hp | 145 kg | 880 mm | 41 |