9005xs HID Conversion Kits are compatible with 9005 HID Kits. 9005 Halogen bulbs have a 90 degree angled base, while 9005xs Halogen bulbs have a straight bottom. HID Kit bulbs do not have bases like regular halogen bulbs do; therefore, there is no difference between a 9005 HID Kit and a 9005xs HID Kit when it comes to HID Kits. A pair of premium ballast and HID Bulbs, along with everything necessary for your installation, is included with your purchase. Order now!