
Like all Softails, Harley's Fat Boy is now available in either carbureted or injected models.
One improvement not limited to the Softail series involves a change to the oil system. All 2001-model Harley-Davidson motorcycles filter their oil prior to entering the engine, rataher than upon leaving the engine enroute to the remote oil tank, meaning critical engine components receive cleaner oil.
| Year | Price | |
| 2001 | $15,000 | TX |
| 2001 | $13,999 | FL |
| 2001 | $13,499 | PA |
| 2001 | $13,450 | CA |
| 2001 | $13,000 | NE |
| 2001 | $12,900 | IN |
| 2001 | $12,800 | IL |
| 2001 | $11,999 | SD |
| 2001 | $11,995 | CO |
| 2001 | $11,995 | TX |
| 2001 | $11,995 | MA |
| 2001 | $11,440 | WI |
| 2001 | $11,295 | FL |
| 2001 | $10,550 | WI |
| 2001 | $10,500 | VA |
| 2001 | $10,499 | MI |
| 2001 | $10,250 | Fl |
| 2001 | $9,999 | WI |
| 2001 | $9,995 | OH |