For dual disc. With polished aluminum fork sliders. 41mm. Complete kit with hard chromed fork tubes and aluminum lower slider assemblies with all internals and forkplugs. Ready to install. Can be used as stock replacement for 86-99 FLST models with single front caliper. 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 models with 35mm and 39mm tubes.