What Is the Harley-Davidson Deuce? (FXSTD Complete Guide, 2026)

The Harley-Davidson Softail Deuce (FXSTD/FXSTDI) is a factory-custom Softail cruiser built from 2000 to 2007. Designed by Willie G. Davidson, it features a stretched 4.9-gallon tank, 21-inch front wheel, Twin Cam 88B/96B counterbalanced engine, and a drag-strip silhouette unlike any other stock Harley. As of 2026, clean examples trade as modern collectibles. Full specs, production history, FXSTD vs FXSTDI breakdown, and used buyer checklist.