Beautifully designed pieces to cover the raw OEM bolt heads on your engine, transmission, primary and more Deluxe kits include motor/transmission/primary and select chassis bolt covers Individual covers are available for a wide variety of bolt and nut styles Made from ABS material, fasten with silicone; sold separately Standard kits include motor/transmission/primary bolt covers Easy to install with included detailed installation instructions Engine kits include motor bolt covers only. COVERS BOLT 06-17 FXD BLK