Philips Ultinon Pro9100 LED car headlight bulb (H11), +350%, 5.800K, set of 2

Very happy with these LED bulbs. Very easy to fit and extremely bright......considerably brighter than the 35w HID kit I used previously and of course they light up instantly unlike HID.The bulbs come with an allen key to allow you to adjust the rotational position of the bulb if required, but this wasn't necessary in my projector headlights.I can't comment on their performance in reflector headlights, although I am very tempted to get another set for my main beams which are reflector.The only downside is the surprising amount of noise made by the cooling fans on the back of the bulbs. It's more of a resonance hum most noticeable when you're sat in the car with the engine off and not actually as noticeable if you stand next to the headlights. With the engine running the noise is mostly masked and is totally masked by road/wind noise when you are driving.Having said all that, overall I would completely recommend these over a HID kit which are more fiddly to install and in my experience suffer with more reliability problems as time passes due to the complexity of the install (relay wiring harnesses etc). And of course these LED bulbs are ultimately brighter!

The item due to arrive on 29 instead arrived on 30 and not by amazon. It came with Anpost went to collect myself bought with amazone prime .The actual Box was open and not sealed.Product deserves 5 stars

As an avid driver who takes great pride in maintaining my vehicle, I've had the pleasure of upgrading to the Philips Ultinon Pro9100 LED Headlight Bulbs, and I can confidently say that they have completely transformed my driving experience.The first thing that struck me about these bulbs was the sheer intensity and clarity of the light they produce. With up to 350% brighter illumination compared to the legal minimum for halogen bulbs, I can now see the road ahead with exceptional clarity, even in the darkest of conditions. The 5,800K color temperature results in a cool, white light that not only looks stunning but also helps reduce eye strain and fatigue during long night drives.But it's not just the brightness and color that impress me – the Ultinon Pro9100s also boast an exceptional cut-off line, ensuring that the light is directed precisely where it's needed, without causing glare for oncoming drivers. This attention to detail is a testament to Philips' commitment to automotive-grade quality and safety.One of the standout features for me is the enhanced lifetime of up to 5,000 hours. As someone who values long-term reliability and efficiency, the fact that these bulbs can outlast traditional halogen options is a huge selling point. The advanced heat management systems, such as AirBoost and AirCool, play a crucial role in maintaining consistent performance and longevity.While the initial investment may be slightly higher than some other LED replacement options, I can confidently say that the Ultinon Pro9100s are well worth the price tag. The superior visibility, high-end style, and peace of mind that comes with Philips' automotive-grade quality make these bulbs a true upgrade for any driving enthusiast.If you're looking to take your driving experience to the next level, I highly recommend giving the Philips Ultinon Pro9100 LED Headlight Bulbs a closer look. With their unparalleled performance and cutting-edge technology, they're sure to become an indispensable part of your vehicle's lighting system. 🚗💨

Excellent light

Rated only 4 as they are slightly oversized in fitting , work great With good illumination but I had to modify the back of my headlamp case for them to fit .