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We have the following HID bulb colours in stock now: 4300°K, 6000°K, 8000°K, 10000°K, 12000°K. If you want to buy a deeper, richer coloured bulb (over 20,000°K) please do not hesitate to contact us. If we do not have the specific Xenon bulb colour listed on the website, send us an email with your request and will try to provide it.
Our Best Selling HID Kit
| IV generation Ultra SLIM HID Single Beam Conversion kit *** PROMOTION, LIMITED TIME *** - £79.99 | |||||||||||
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This Plug and Play HID conversion kit comes complete with:
- Two HID bulbs List price: Sale price: £79.99 ( 52% OFF !!) *** 12 Months Hassle Free Warranty***
* Top quality HID conversion kit, with one of the lowest failure rates on the market.
* Free USA shipping, usually shipped out within 24 hours from the US warehouse (Note: due to high demand our new IV gen kits may take up to 48 hours to ship out) * 100% Plug-n-Play Installation * 100% weatherproof, waterproof and shock resistant |
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| IV generation SLIM BI-XENON High/Low two ballast Conversion kit *** PROMOTION, LIMITED TIME *** - £99.99 | |||||||||||
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This HID conversion kit includes:
- Two H4 HID bulbs List price: Sale price: £99.99 ( 52% OFF !!) *** 12 Months Hassle Free Warranty***
* Top quality HID conversion kit, with one of the lowest failure rates on the market.
* Free USA shipping, usually shipped out within 24 hours from the US warehouse (Note: due to high demand our new IV gen kits may take up to 48 hours to ship out) * 100% Plug-n-Play Installation * 100% weatherproof, waterproof and shock resistant |
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The Brightest Top Quality HID Conversion Kits

You don't need to rush out and buy a Lexus or a Mercedes to get those stunning HID headlights. With our HID conversion kits, you can transform your car into a show-stopping motor that will wow your friends. Our HID kits come complete with English fitment instructions, all of the hardware needed and are simply plug and play. We are the #1 HID kit supplier on the internet and we only stock the finest HID conversion kits.
We have HID kits to suit hundreds of different cars and models, and as we only stock the best HID kits around, they have the lowest failure rate available. On our premium products, we are so confident that they are of the highest quality we offer an amazing 24 month guarantee.
The HID kits start at just $79.99, which includes all of the mountain hardware, wiring, instructions, two bulbs and two ballasts, as well as fantastic choice of colours for the bulbs. On our low cost HID light kits there is a 12 month guarantee or a 24 month guarantee for the Premium kits.
Please note: All of our products are shipped from the UK and there is FREE shipping for customers within continental UK.
When ordering before noon, your HID kit will be most likely posted on the same day or within 24-hours at the most. If you are unsure of the type of fitment for your vehicle, please use the HID kit selector at the top of the page to choose the bulbs suited for your application. If you have any questions about the products, please contact us.
Thank you for shopping with HIDConversion.co.uk!!
HID Kits for Cars - Picking the Right One
It can be a little daunting to understand the different terms and conditions needed when you want to buy an HID kit for your car. Here are some pointers to consider:
Regular or Slim Ballast
The Slim ballast is a streamlined version of the regular ballast and although it is a little more expensive, when it comes to the installation the slender fitment really makes the difference. Less weight and bulk make it easier to fit and you have more choices on where to mount it.
35 Watt vs 55 Watt HID Ballast
You don't need to be an electrician to fit the HID lights but it's obvious that a 55 Watt bulb will emit brighter light than the 35 Watt bulbs. The higher output of the ballast means that it will deliver 40% more light compared to the lower rating kit. If you're converting from a halogen bulb (standard bulbs) then the 55 Watt kit is a more suitable replacement as they will have similar power ratings.
If you install the 35 Watt kit then depending on your car, it could flag up an internal computer error as the ECU thinks that the bulbs are malfunctioning because they are running at a lower power output. If this happens you might need to buy an error elimination device to get rid of the warning.
Relay Harnesses, What are they For?
As there are a few Xenon light kits out there, if you choose the single beam HID Xenon kit (low beam headlights only) then there is no need for a relay harness. If you install fog lights as well as high and low beam headlights, then the system has more to deal with and a relay harness is needed. The relay harness allows the power to run directly from the battery, without drawing power from the electrical system throughout the car.
Waterproof
Our HID kits are 100% waterproof, which means that no matter where you live, the weather won't affect the unit. In some cases, people who buy cheap HID kits will find they fail in wet weather. With our HID lights, you only need to buy them once.
Quality
Our lengthy warranty should show you how confident we are in our Xenon headlights. The failure rate is very low and that means that you don't need to waste your time with inferior HID headlights, do not buy poorly constructed kits on ebay, go for the best ones.
Disclaimer
As with many car manufacturers, the fitment of OEM are perfect legal for the street, although some Xenon conversion kits might not be legal in your region, state or country. It's best to check with the authorities before you drive the car on the road. Our headlights were designed for show or off-road use as they can be blinding for other road users and might not cut off the light properly. HID headlights that does not come in a kit or bundle, might not be certified by some local authorities. It is your responsibility to understand the legal implications and standing of your country or region, and the local regulations of laws that are in practice.
Bi-Xenon HID Conversion Kits
When configuring the HID Xenon headlights to bi-Xenon lights (high and low beam), here are the options of the fitment:
1) Keep the regular Halogen bulbs for high beams and run the Xenon HID lights for low beam only
2) Run bi-Xenon headlights, which features a dual beam bulb for high and low beams.
If you are looking to buy bi-Xenon HID headlight kits, contact us or use the above drop-down menus for more details.









