This is the all new HIDS4U SLIMH4 Bi-Xenon HID lighting kit.

These new super thin ballasts are great when space is a major premium. Commonly used on a lot of modern car engines that seem to fill up most of the engine bay! The HIDS4U Slim ballasts are of course Digital, which improves reliability and reduces the problems associated with the older non-digital type ballasts. They are also fitted with a separate starter attached to the ballast

This slim ballast has been fully tested by us to be reliable and easy to use. They will convert your standard H4 halogen headlights to the ever popular super bright HID Xenon lights. As we are always dedicated to bringing you only the highest quality, we can offer a 2 year warranty with the kits.

We have been selling HID kits for many years and we refuse to compromise on quality. Our kits have the lowest failure of any we know of with less then 1%. Our H4 Bi-xenon bulbs, whilst more expensive, produce more lumens and outlast other cheaper bulbs.

As these ballasts are at the higher quality end, the HIDS4U SLIM ballast produces more light than other HID conversion kits and are even brighter than the factory fit Xenon headlights. Over 300% more light than your existing H4 halogen bulbs.

To make fitting even easier we have written our own instruction manual so you don't have to translate the Chinese English instructions supplied with most other HID kits. We even included a fault finding guide.

This kit boasts top quality steel waterproof ballast, high quality purpose made H4 Bi-xenon bulbs with metal or ceramic bulb holders that are designed to produce perfect beam patterns and focus just like the halogens they replace. The bulbs have been UV cut to prevent damage to plastic lenses.

The H4 Bi-xenon system operates both main and dipped beam as with the H4 halogen bulb, so both will benefit from brighter halogen light.

This kit is ideal for most cars even with bulb failure alarms. However please use our "Find HID Kit for my vehicle" application guide to check which of our HID kits are most suited to your vehicle.