Speed by Design Super Fly Road King Nacelle is designed with 26” or 30”  Short Neck Kits in mind. While intended for a 5.75 inch diameter head  light, the Super Fly Nacelle will look best with the Vision X Vortex LED  headlight. The Super Fly Nacelle is offered with either the bar clamp  cover that accepts the Dakota Digital dash MCL-5200 Spiked Speedometer  with Indicators or without. The Super Fly Nacelle sold complete with bar  clamp cover is $599.00 retail. Customers also have the choice to add  the Dakota Digital MCL-5200 for $389.95 retail, and Vision X LED  Headlight for $399.00 retail.