Breaking state laws, more than likely not.


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I am not concerned with heat management, although those computer fans are ridiculous they are the least of your worries. That has absolutely nothing to do with the problem with optics geometry.

They're "specifically designed for the 4Runner" but the 4Runner is not unique. Many vehicles use H11 bulbs in a projector assembly. The focal point of the reflector bowl and projector optic depend on the filament of that bulb to project light correctly. If you change the placement or dimensions of that light source, you ruin the function of the light. Those LED bulbs are not the same dimension as a halogen filament.

They're also, uh, not legal or DOT compliant to use. Lasfit goes out of their way to let you know that in the product description.

The reason is because there's no way these lights would pass any sort of compliance test for proper headlight pattern and intensity.


The downside would be having headlights that are not safe to drive with at highway speeds, for the reasons I mentioned earlier.

That’s a nice illustration but no longer relevant with the automatic high beams now fitted to almost every car and truck. Even my 2020 4runner now has what was a common thing in the GM and Euro cars I owned more than 10 years ago. If I need to see farther down the road, the high beams come on. Boom. Like fkn magic. If a car is in the foreground, the lights dip so as not to blind them. It’s the best of all worlds.

Hell, the new MB lights use beam forming so the highs on is the default, and the light gets moved to where it’s needed. So many of these things are non issues with the use of technology but yet here we are discussing the merits of Edison’s light bulb.

You're sidestepping the issue I am describing with strawman arguments, and many people here do not have automatic high beams. Again, I am not saying that halogen bulbs aren't severely outdated. What I am saying is that trying to mash LED bulbs into an application they don't belong in, makes them worse not better.

Compare a bow and arrow to a modern rifle. There is no question as to which one is more effective in putting a projectile downrange. However, putting an LED bulb into a halogen assembly is akin to trying to fire a rifle cartridge from a bow. It doesn't work and you'll look dumb doing it.

I'm not really though. The issue is the claim that LEDs in halogen projectors reduce the ability to see down the road far enough. I'm saying that's not necessarily the case since high beams can fulfill that role, and do with no effort in cars that have the ability to automatically switch back and forth. And, the better designed LEDs, those that do a pretty good job ay mimicking an incandescent filament, mounted in projector lights, with the built in physical mechanical cutoff, don't blind oncoming traffic if they're aimed properly.

So the cases where the simulated halogen filament LED in a projector housing are a poor alternative become less and less so every day as more cars are on the road with the proper ways to a) mitigate the offense to others and b) mitigate the issue of the owner of said vehicle not being able to see far enough down the road.

All that said, it does nothing to make the use of an LED bulb in a reflector housing a good choice.

I don’t know about that, man. I drive a lot at night and see hundreds of car headlights coming at me, one after another.
You can really tell the difference between proper ones and shitty blinding ones. And the shitty ones are increasing.

You can’t fix stupid, that’s for sure. All I’m saying is there are ways to make the so-called shitty lights work, and work well, but that’s dependent on the owners giving a shit and the tech being present. I can’t say whether either is true for everyone, just that it’s possible to enjoy more light and not be a dick to others.

Quite frankly I’m tired of the preaching of the sycophants genuflecting on the altar of the “drop in LEDs bad” religion. Some are bad, some aren’t, and the ones that aren’t can be made to work quite well given a little attention. Certainly they work better than the anemic candles the factory shipped with 4runners until this year.

I just find it funny that image uses a deer. It doesn’t matter what lights I use that deer is still gonna find a way to get hit.


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Now that’s true!

Please read (and re-read) my posts. I am in agreement that projector assemblies with integrated cutoff shields are not creating additional risk of glare. The glare problem was more prevalent with older, reflector based headlights and frankly appalling drop-in LED bulbs (that are even more terrible than examples on sale today).

What does dazzle other drivers, however, is... well, high beams. Which means that their use is limited when facing traffic in the opposite direction. Depending on where you live and drive, that may happen infrequently, or that may happen so often as to make your high beams unusable. I'm still not clear on why high beams existing means that I should stick illegal and unsafe Chinesium LED bulbs in my low beams.

I understand that you may have automatic high beams in your 2020 truck, but this generation is nearing 12 years since its introduction and many of us do not have the newer gizmos, by choice or otherwise. And the discussion of the newest selective beam technology in european OEMs is frankly puzzling. Other drivers enjoying new and precise LED technology doesn't somehow improve our dinosaurs by association, and it doesn't mean that these cheapo bulbs are somehow elevated to OEM levels of safety and usability. This is what I am referring to when I say "sidestepping".

Doing a "pretty good job of mimicking" a halogen filament is actually descriptive of the newer generations of these chintzy bulbs. They're fairly successful at approximating the size and placement of the emitters. The dimension that they're still struggling with is thickness- because they still need power and heat management circuits between the LED chips. If you review this link, you'll actually see that there are so far only (2) LED bulbs that come close to this minute thickness, and therefore retain almost acceptable focus and light distribution patterns if you absolutely insist on LED bulbs (the Hikari Ultron, an Amazon-only brand, and the 2stroke 3.0, an offering from the boutique brand Morimoto). It should also be noted that both are handily beaten by traditional performance halogen and H9 bulbs within the same assemblies.

3rd Gen HID vs LED vs Halogen H11 projector headlights | Tacoma World

The pictures by Lasfit do not inspire confidence, as the distance between the emitters looks to be quite thick -around 3 to 5 times the thickness of a halogen filament.

just a suggestion, why didn't you leave the 2021 led headlights at stock level setting from the factory?

my issue with drop in led bulbs for our low beams are how far they shine out and visibility. They look great on a wall but it was horrible at nights.

drop in led bulbs in the fogs are even worse on blinding incoming traffic. they did shine out pretty wide and far tho...


both looks great when just looking at the headlights for the color. The low beams just dont shine out worth a crap. I hate to say it but the halogens lit the roadway better than the drop in's

Because they came off a 2021 TRD Off Road and I drive a 2019 TRD Pro which has a 1" higher front-end lift, so left at factory they would be aimed too high.

If you are looking for a great fog light upgrade, it is better to replace the entire housing with an LED pod. The pods have correct LED optics as part of their design, rather than the drop-in style.

There is a great thread by the same guy on Tacomaworld. The lights reviewed here all meet the SAE J583 standard for road legal use:

The LED SAE J583 Fog Pod & Fog Light Review | Tacoma World

Spoiler alert, the current front runners are all by Diode Dynamics. The SS3 sport, pro, and max all outperform the competition and are priced competitively.

i am about to start a thread up on a complete 2021 retro fit including headlights and fogs.