2012 Harley-Davidson® Dyna® Switchback® The 2012 Harley-Davidson® Dyna® Switchback® FLD is a Dark Custom with a big motorcycle feel. The Dyna® Harley® features a Twin Cam 103 engine, roviding all the custom Harley® power you need. For the custom style you want, he Switchback® motorcycle's beefy handlebar is truly reminiscent of an aggressive quarter mile monster. And with the wires routed through the steel, ou get a clean, inimal look with nothing standing in your way of the open road. Add to that the wide stance and 18i nch front wheel, nd you have a cool fat custom look with a powerful big twin engine. And if you like a little Harley® chrome on an otherwise stripped down bike, ake a look at the rear chrome shocks. These high performance coil over rear chrome shocks give a smooth ride and custom look. For a little more chrome, he Dyna® model also features a distinctive cast chrome double headlamp bucket.