The Harley Davidson FXD is produced since 1991.

The models in the years 1991-1998 were equipped with a evo engine, while the rest of the models have twin cam engines.

Like the FXR, the FXD has a rubbermounted engine (Rubber is placed in front of the engine and at the transmission) the bike has a lot fewer vibrations than the ordinary Harley bikes. In my opinion the FXD is equipped with a better mounting than the FXR and has even fewer vibrations than the FXR.

When this is said I think the FXR, maybe because of it's mounts, handles a lot better than the FXD.