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Cyclops 10.0 H4 LED Headlight Bulb (Street)

#1 Best Seller
in Rally Accessories
9 reviews
7 items left

Now available in the original version or the Ultra version. The original uses the front two emitters for low beam and then switches to the rear two  emitters for high beam, The Ultra uses the front two emitters for low beam and then runs all 4 emitters on high beam at a reduced wattage. wattage is 38 watts on low and 38 watts on high.

By far the best LED headlight bulb cyclops has ever offered. We have taken all that has been learned over the years and rolled that into our latest 10th gen bulbs. This bulb uses 4 cree XHP 50 emitters capable of more than 2500 lumens each. The brightest Cyclops H4 bulb.

  • All new metal construction for bases and collars.
  • Better thermal efficiency 
  • Better beam pattern differential between high and low beams. 
  • 5600k
  • 38 watts 
  • Removable metal base plate for easy install.
  • Screw on connectors at driver
  • Standard H4 connector
  • High / Low Beams
Operates on DC power only, so if you have a bike with H4 bulbs and AC power system you will need a rectifier. Most street legal bikes are DC powered, the exception is the KTM EXC 250/525/530 carburetor bikes and most other dirt bike based dual sports.



  • Street bikes only
  • ALL bikes with H4 bulbs and DC Power System.
  • Bikes with H4 bulbs and AC power system will need a rectifier
  • Does not fit Super Duke GT 
  • Not recommended for Yamaha Tmax, KTM Super Duke or vehicles with DRL's.



This product can expose you to chemicals known to the State of California known to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65

Customer Reviews
3.4 Based on 9 Reviews
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Filter Reviews:
    Edward M.
    United States United States
    2021 Husqvarna 701 enduro Cyclops 10.0 H4 LED Headlight Bulb review

    This bulb will not drop-in to the 2021 Husqvarna 701 enduro factory headlight housing. To make this fit, the housing will have to be carefully modified/cut with a Dremel tool. I ended up cutting the bulb connector cable away from the housing, soldering it together, and using stainless steel safety wire to secure the LED bulb to the reflector housing. After that the bulb worked great.

    David B.
    United States United States
    Great service and communication

    Fast emails and updates on order great place to shop

    A KTM Twins Customer
    Andy D.
    Canada Canada
    Cyclops led bulb

    Awesome awesome awesome

    Peter W.
    United States United States
    Perfect light for me.

    Easily installed. (KTM 690 Duke ABS) took about 20 min. of just kick’n it installation. Made a big difference in being able to see after dark. The high beam is just perfect. It shines farther out in front but not at a much greater height. In fact I use the brights after dark all the time and have only had a couple cars blink their brights at me.

    Daniele M.
    United States United States

    Very powerful bulb. Best price I could find on the web. Fast shipping, good communication.

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