Dual Disc. With polished aluminum fork sliders. Complete kit with hard chromed fork tubes and aluminum lower slider assemblies with all internals and forkplugs. Stock style replacement for models with dual front calipers. It will also retro-fit all wide glide type Big Twin models from 49-83. When used in combination with a 41 mm type Wide Glide triple tree conversion kit this kit will fit most FX and XL with 35mm and 39mm fork in custom applications.