Aharon Optimus TR - Bi-xenon projectors
Aharon Optimus TR Bi-xenon projector
  • Brightest projector available for direct mounting in H4 halogen reflectors
  • Intense hotspot right below laser-sharp cut-off line
  • Full-width efficiency
  • Crystal-clear 3” glass lens
  • Alloy reflector bowl for optimal heat dissipation and durability
  • Fits D2S/D2H bulbs
  • 2-year full warranty & 14-day returns
  • Fast worldwide shipping

Do other cars constantly outshine yours? Ready for a brighter future?
Even the most powerful halogen bulb won’t get you anywhere near the brightness of a dedicated xenon setup (the market-leading xenon bulb is some X times brighter than the top halogen bulb), and you already know that plug-and-play xenon and LED bulbs are downright dangerous. Luckily, every step in retrofitting a xenon projector is about as easy as changing a bulb. The Aharon Optimus TR does not only offer effortless retrofitting; it’s also the very brightest projector available for direct mounting in H4 halogen reflectors! A product of years of research and development, this premium retrofit kit ticks all the boxes: bi-xenon functionality (both low- and high-beam xenon), superior light output, superior durability and simple installation.

Needless to say, each kit includes projectors for both headlights, and you’ll enjoy a comprehensive two-year warranty (to be compared to the limited warranties you’ll see elsewhere).

Here’s why the Aharon Optimus TR is a really bright choice;

  • Superior light output
    Projectors keep evolving and the Optimus TR offers the best output you can get from a threaded D2S projector. Comparing the output to a standard H4 halogen bulb (or plug and play LED/Xenon bulbs) is just unfair because the Optimus TR will outshine them by so much...
  • Full-width vision
    Thanks to the perfect design of the bowl and cut-off shield, the super-wide beam of the Optimus TR isn’t just some faint glow at its extreme ends; you’ll have plenty of light on the dark sides of the road.
  • Laser-sharp cutoff
    The beam pattern has a laser-sharp DOT-spec cut-off, ensuring maximum illumination without distracting other traffic. It’s perfectly horizontal along the entire edge of the cut-off. As a nice bonus, the optically clear glass lens of your Aharon also produces a brilliant blue colour flicker at the cut-off, presenting onlookers with a high-class impression.
  • Perfectly positioned hotspot
    The Aharon Optimus TR puts a wide and intensely bright hotspot right below the cut-off line, enabling you to detect hazards from a great distance. Check out the comparison pics and you’ll see for yourself; this is one of the most useful hotspots on the market.
  • Reliable low & high beams
    A durable push-pull solenoid ensures that you won’t ever be stuck in either low or high beam, and that’s a very good thing, because the high beam of the Optimus TR is powerful.
  • Maximum heat dissipation
    The alloy reflector bowl dissipates heat efficiently, protecting the reflective surface from deterioration.
  • Full-metal lens holder
    A full-metal holder keeps the crystal-clear 3” glass lens securely in place no matter how bumpy the road gets.
  • Solenoid cables & connectors included
    As opposed to competitor products, your Optimus TR comes complete with solenoid cables and connectors, so connecting the high-beam splitters is true plug-and-play.
  • Optional lens tint
    The optional blue lens tint makes for a cool statement that complements your new bi-xenon headlights beautifully.
  • Effortless retrofit
    The Optimus TR was designed for super-easy retrofitting in H4 reflector headlights, featuring a threaded shaft that mounts directly in the bulb hole. Once the headlight is open, you can fit and connect your Optimus TR in minutes, without the need for any special tools.

Retrofitlab warranty and support
All products are inspected by our internal quality control prior to shipping and come with a solid 2-year warranty. You’ll also enjoy complimentary access to our highly rated technical support. Retrofitlab have been at the forefront of automotive lighting since 2012, so we can answer most questions immediately. Should you have any queries before or after purchase, please simply refer to our FAQ page or the chat box below.

We look forward to brightening your day (not to mention your night)!

  • Brightest projector available for direct mounting in H4 halogen reflectors
  • 3.0 inch lens, and overall somewhat bigger than Mini H1 (which also mounts in H4 reflectors)
  • Smallest shrouds do not fit because of that (Mini Gatling Gun, Mini AE)
  • Fits D2S and D2H bulbs
  • Minimal mounting depth: 118mm
  • Projector width: 103mm
  • For more dimensions, see the Installation information


Total Length: 141mm
Mounting depth: 118mm
Threaded shaft length: 23mm
Width: 103mm
Height: 82mm
Lens size: 3”
Lens holder and lens length: 71mm

Worldwide Tracked shipping

We are based in Europe (the Netherlands) and we ship worldwide. So shipping to the United States, Australia, Canada etc. is not a problem at all.
All our orders have a track and trace / tracking code, so you can check the progress. The orders are processed by ourselves and send out from our own warehouse.

Delivery Time

We are known for our fast deliveries. All delivery times start when we have received your payment. The products that are in stock will normally be shipped within 1 working day. The shipping time varies based on the destination. Please check the estimated shipping (working) days and costs below. We ship directly from our warehouse in The Netherlands.

Shipping costs

Almost all of our orders will be shipped by tracked parcel shipping. We try to use the best option based on price, delivery speed and service. Most of our shipments are shipped with UPS, sometimes we also use DPD or PostNL.

You can find the shipping costs and shipping times for parcel shipping for inside and outside the EU in the table below.


Zone Countries Price Working days est. delivery
Domestic - UPS The Netherlands € 7,99 1-2
EUR 1 - UPS Belgium, Germany, Luxembourg € 10,98 2-3
EUR 2 - UPS Austria, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, Greece, France, Hungary, Ireland, Italy, Latvia, Lithuania, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden € 14,98 3-5
EUR 3 - UPS United Kingdom, Norway, Switzerland € 17,49 3-6
Rest of Europe - UPS € 19,98 5
US - UPS  United States € 34,50 / ~$ 38 5
Rest of the World - PostNL   € 35,95 10

Tracking shipments

When you choose parcel shipping, you can follow your shipment. You will receive an e-mail from us with a tracking code as soon as your order leaves our door.


The carriers for parcel shipping choose their own schedule for deliveries. Remember that you need to be present at the delivery address during working days from 9 till 5 in order to receive your order. It remains your responsibility to make arrangements for the way that the order is received at the delivery address. Orders we sent by envelope will arrive, even if you are not at home.

UK prices, shipping and taxes

UK prices / taxes are based on the order amount. For more information please see this FAQ item: UK prices and taxes.

You can find other products in the collection; HID Bi-xenon projectors

Delivery info

Shipped from our warehouse in the Netherlands
delivery is generally within 2-10 days,
depending on your location.

14 days returns

Not the right fit? No worries!

2 year warranty

Quality comes first and our products are designed to last.



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