I am seeking advice on what brands of LED replacement headlight bulbs are available that will fit the X type (2009 model) without any modification. Do such LEDs exist? Or are modifications required to fit them?
I would only be interested in types that fit without modification. Is there anyone out there who has successfully replaced their headlight bulbs with LEDs?

 

You'll need the warning cancelling capacitors =

https://www.headlightexperts.com/low...0aAtWDEALw_wcB

https://www.xenonhids.com/low-beam-h...EaAgGEEALw_wcB

I have HID and Thermo is the resident expert if you go that way. They now have kits to add them, compared to when members first converted.

 

I tried some LED bulbs in the stock halogen housings, but I found the LED heatsinks are too big to fit inside the dust dust cap for the housing. So if you do decided to buy LED bulbs, beware of the size of the heatsink and know exactly just how much space you have to work with.

 

Thus, this statement by the manufacturer link posted in my response =

In addition, we made our LED sets with the slimmest design on the market so fitment is never an issue. The clearance is about the same as most of the factory bulbs that you are removing so there is no chance of incorrect fitment. Most competitors use bulky cooling units at the back that have a hard time fitting in most headlight assemblies. Our unique aluminum fin radiators encourages optimum cooling of our units so they can last a lifetime.