Dyna

Main article: Harley-Davidson Super Glide

2005 Dyna Super Glide Custom.

Dyna-frame motorcycles were developed in the 80's and early 90's and debuted in the 1991 model year with the FXDB Sturgis offered in limited edition quantities. In 1992 the line continued with the limited edition FXDB Daytona and a production model FXD Super Glide. The new DYNA frame featured big-twin engines and traditional styling. They can be distinguished from the Softail by the traditional coil-over suspension that connects the swingarm to the frame, and from the Sportster by their larger engines. On these models, the transmission also houses the engine's oil reservoir.

In 2006, Harley-Davidson released a line-up of five Dyna models: Super Glide, Super Glide Custom, Street Bob, Low Rider, and Wide Glide.

In 2008, the Dyna Fat Bob was introduced to the Dyna line-up featuring aggressive styling, including a new 2-1-2 exhaust, twin headlamps, a 180 mm rear tire and a 130 mm front tire.

The Dyna family uses the 88-cubic-inch (1,440 cc) twin cam from 1999 to 2006. From 2007 and on, the displacement was increased to 96 cubic inches. This was the result of the factory increasing the stroke to 4 3/8" inches.