In 2008, the Dyna Fat Bob (FXDF) was introduced to the Dyna lineup, featuring aggressive styling like a new 2–1–2 exhaust, twin headlamps, a 180 mm rear tire, and, for the first time in the Dyna lineup, a 130 mm front tire. For the 2012 model year, the Dyna Switchback (FLD) became the first Dyna to break the tradition of having an FX model designation: with detachable painted hard saddlebags, touring windshield, larger fork tubes, headlight nacelle and a wide front tire with full fender. The new front end resembled the big-twin FL models from 1968-1971. It also is listed by Harley as part of their touring range. 
Dyna-frame motorcycles were developed in the 1980s and early 1990s 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.
Prior to 2008, Dyna models typically featured a narrow, XL-style front fork and front wheel, which the manufacturer included the letter “X” in the model designation to indicate. This lineup traditionally included the Super Glide (FXD), Super Glide Custom (FXDC), Street Bob (FXDB), and Low Rider (FXDL). One exception was the Wide Glide (FXDWG), which maintained the thickness of the XL forks and a narrow front wheel, but positioned the forks on wider triple-trees that give a beefier appearance.
Introduced in 2001, the VRSC family bears little resemblance to Harley’s more traditional lineup. Competing against Japanese and American muscle bikes in the upcoming power cruiser segment, the “V-Rod” makes use of an engine developed jointly with Porsche that, for the first time in Harley history, incorporates overhead cams and liquid cooling. The V-Rod is visually distinctive, easily identified by the 60-degree V-Twin engine, the radiator and the hydroformed frame members that support the round-topped air cleaner cover. The VRSC platform was also used for factory drag-racing motorcycles.
In 2008, Harley added the anti-lock braking system as a factory installed option on all VRSC models.[108] Harley also increased the displacement of the stock engine from 1,130 to 1,250 cc (69 to 76 cu in), which had only previously been available from Screamin’ Eagle, and added a slipper clutch as standard equipment.
Custom Motorcycles 