NO COMPARISON: When it comes to HID bulbs, Morimoto has always brought us the best in the aftermarket, and their latest examples are no exception. Sure we think the options from Philips and Osram are great too, but when it comes to bang for the buck – nothing compares to the Morimoto XB HID lineup. Designed for boosted 50W+ ballasts, The XB’s will produce more lumens, last longer, project farther, and look better doing it.

XB50: New for 2018! Until now, there hasn’t been a high quality, high output D2S HID bulb since the oldschool Philips DL50! While the XB50 wont magically make your headlights any brighter on boosted ballasts: They will have a longer lifespan, resist premature wear, be more reliable, and maintain their rated Kelvin rating rather than yellowing out like bulbs designed for a 35w system would. Solid choice for those who want the most output from their system!

LUMINOSITY: At the heart of the XB D2S bulbs is their perfectly aligned 100% Philips quartz glass that houses a capsule from APL-USA. Using high quality halide salts from German-supplier Messer; the bulbs produce nearly the same luminosity (intensity) as the amazing Osram CBI bulbs at 5500K. No, you’re not seeing things here, but yes you will be seeing everything at night. In our VIDEO you can learn all about the benefits of the new XB50’s

LONG LIFE: The Austrian-sourced Plansee electrodes help keep the bulbs running brighter for longer. In comparison to a Philips bulb with 200 hours of use; the Morimoto will maintain 83% of it’s intensity whereas the Philips bulb will retain 86%. Yeah, the Philips maintains a little longer, but this kind of longevity is unheard of in the aftermarket. We’re impressed!

PRECISE ALIGNMENT: Morimoto’s Symmetry-Structure frame surrounds the base of the glass capsule keeping everything properly lined up, which is paramount when it comes to HID bulbs. In the past we all agreed that precision wasn’t the strong suit for the XB bulbs…but the latest are indeed the greatest – and they’re now consistently well-aligned, which is a good thing – because it means the output is also consistently bright and uniform throughout. [Applause]

RELIABILITY: Not that we recommend this for any HID bulb, but go ahead and fire it up 100 times in a row or even run it underwater for days at a time and the difference between the XB and any so called “competition” will be clear. These bulbs will even work with OEM Nissan/Infiniti (Matsushita/Panasonic) ballasts, which are notorious for compatibility problems on anything aftermarket.

COMPLIANCE: The XB replacement HID bulbs are built to industry-standard specifications and meet/exceed all SAE, DOT, and ECE requirements, making them a perfect match for a replacement bulb or upgrade! They have been tested for reliability with all ballasts from Morimoto, Denso, Hella, Bosch, and Koito and passed with ease.

TRUSTED: For more than a decade, we’ve worked hard to earn our killer reputation. Car guys world-wide know that TRS carries the internet’s best selection of high performance automotive and powersport lighting products at the best prices, and we’ve got the best, most knowledgeable team of real enthusiasts to help back it up. If we sell it, then you bet we’ve put it to the test on our own cars, trucks, and bikes. Need a recommendation on parts for your project? Got a tech question? Wholesale inquiry? Contact Us


  • BULBS: 2x D2S Morimoto XB HID
  • WARRANTY: 2 Years
  • MISC: Alcohol wipes (to clean bulbs before use)

  • OSRAM PART #: 66040 / 66240
  • PHILIPS PART #: 85122 / 85122+ / 85122C1 / 85122WX
  • BMW PART #: 63 21 7 160 806 / 63217160806
  • AUDI PART #: N 104 457 01 / N10445701
  • LEXUS PART #: 909812002
  • MERCEDES-BENZ PART #: 910139-000001 / 910139000001
  • NOT SURE: Find my size!


  • LIFESPAN: 2500 Hours
  • WATTAGE: 55W+
  • 4800K: Warm White (~4200 lm @ 50W)
  • 5800K: Pure White (~4800 lm @ 50W)