Smooth Steel Fat Fork boots feature specially notched inside surfaces to allow the use of fat / wide front wheels on FLT front ends. Universal factory like styling. When paired with Arlen Ness fat front fender designs, 18 x 5.5 fat front wheels can be installed without any fabrication. True direct bolt-on solution for wide / fat tire front ends. Will work with factory or aftermarket fork legs and triple trees. Formed and laser cut from premium quality steel. Designed to work with both: 18 x 5.5 & 21 x 5.5 fat custom front wheels.