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  • Home
  • Xenon HID
  • 55W Slim Kits
  • H4 Bi-Xenon 55W HID Conversion Kit High/Low 12V Slim Ballast 4300K-10000K 1yr Wty
  • H4 Bi-Xenon 55W HID Conversion Kit High/Low 12V Slim Ballast 4300K-10000K 1yr Wty

    RRP:
    Was:
    Now: £42.65 inc. VAT
    RRP:
    Now: £37.08 ex. VAT
    (You save )
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    SKU:
    55WSLIMH4-VAR
    Availability:
    Ships Same or Next Working Day

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    Product Description

    Key Features:

    • For H4 bi-xenon bulbs—true HID high & low beam (solenoid-controlled)

    • 55W full xenon kit—400% more light than standard halogen (up to 4600 lumens)

    • Plug & play—no cutting or wiring needed, easy installation

    • Latest digital slim 55W ballasts—very low fail rate, E4 marked (off-road use only)

    • Lasts up to 10x longer than standard halogen bulbs

    • Safe for plastic headlights—produces less heat than standard 55W halogen

    • 1 year warranty—bulbs and ballasts, free replacements if needed

    • Five colour options: 4300K, 5000K, 6000K, 8000K, 10000K

    • Complete kit—includes bi-xenon bulbs, 55W ballasts, hi/low relays, brackets, wiring, instructions

    • Not canbus compatible—see our other listings for canbus kits


    Product Description:
    Upgrade to true HID high and low beam with this H4 Bi-Xenon 55W Full Xenon HID Conversion Kit. This kit features telescopic H4 bi-xenon bulbs with a built-in solenoid for instant switching between dip and main beam from a single bulb. Experience up to 400% more light than standard halogen for excellent night visibility and a crisp, modern look. The kit uses the latest digital slim 55W ballasts for reliable, efficient performance, and installs easily with no cutting or wiring required (non-canbus vehicles only).

    Colour Options:

    • 4300K – OEM White (4600lm)

    • 5000K – OEM White (4400lm)

    • 6000K – Ice White/Blue (4200lm, most popular)

    • 8000K – Noticeable Blue (3600lm)

    • 10000K – Deep Blue (3400lm)
      (Lower K = brighter; standard halogen ≈1100lm)

    What’s Included:

    • Pair H4 bi-xenon telescopic HID bulbs (high/low via solenoid)

    • Pair digital slim 55W ballasts

    • Pair ballast mounting brackets

    • H4 hi/low relays

    • Any necessary wiring

    • Instructions

    Slim Ballast Technical Specs:

    • Input Voltage: 7-20V

    • Working Voltage: 12V

    • Starting Current: >6.5A

    • Working Current: 3.5A

    • Working Temperature: -40°C to +105°C

    • E4 marked (off-road use only)

    Compatibility Notice:
    This kit is not canbus compatible and is intended for vehicles without bulb warning/error systems. If your car reports bulb failures, you likely need a canbus-compatible kit—see our other listings.

    For off-road use only.
    Order now for fast dispatch and a serious lighting upgrade!

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    H4 Bi-Xenon 55W HID Conversion Kit High/Low 12V Slim Ballast 4300K-10000K 1yr Wty

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