LED Fog Light Bulbs

5202/2504: GTR Lighting Ultra 2.0


PART #: 2 x GTR.LED735

[ In Stock: 0 pieces ]

Product Details

Craftsmanship: Designing a high-quality LED is a task GTR Lighting took seriously. Unlike so many companies that skimped on every single detail they possibly could, this 5202/2504 GTR Ultra Series 2.0 features a multi-faceted design that covers every base with real attention to detail.

The Best: While so many others use Philips or CREE LED chips, GTR went with a high-quality NLW753 option to ensure better results. Those results show through to the finished product too thanks to digitally optimized LED positioning that emulates the original filament location precisely. Combining these features is the key to getting all the light from the source to the reflector surface and ultimately onto your target without wasted lumens and glare all over.

Unstoppable: Consider this, GTR backs the performance of this LED light for life. They can be that confident because of all the work they've done to ensure it won't fail. The internals are 100% potted and waterproof for the wettest of trails or the heaviest rains. That means that the fan will never stop cooling either so temps never rise above 80c, well below the threshold for danger. They knew what they were doing when they assembled this rugged LED.

Better Fitment:We've heard many who assume that because the Ultra Series 2.0 is smaller than competitors that it's weaker and less capable. They couldn't be more wrong. Thanks to that small stature, it requires less energy to keep cool and keep power to the LED up. That results in 4100 lumens of output and a considerably easier time installing them. There are zero downsides here.

Best Warranty: We can't overstate this. You won't need another headlight bulb after these ones. They're so solid and strong that GTR backs them for life.

HR Tested: Here at Headlight Revolution, we spend a lot of time installing and testing the products you'll find for sale. We don't favor any particular brand, so our commitment to you is that we'll deliver the best product for your application, period. To see all of the compatible lighting upgrades for your vehicle, use the "buyers guide" on our homepage! Be sure to check out the HR YouTube channel for hundreds of helpful install and review videos!

Product Specs

  • Compatibility

  • BASE/FITMENT: 5202/2504/PSX24W

  • APPLICATION: HID and LED bulbs are street legal in the USA for Fog Light use only. Not compliant with DOT / FMVSS108 and not street legal in the USA for Headlights. Legal for off-road use in Snowmobile and ATV headlights and off-road racing use only auxiliary or forward lighting. International street legality varies by country. For detailed clarification on street use, CLICK HERE Note: This usage regulation is not unique to GTR Lighting bulbs. All LED and HID bulbs from all other brands, regardless of marketing claims, are prohibited from street use in halogen headlights in the USA.



  • Do I need PWM / Anti-Flicker Modules?:

  • Use in Fog Lights: Unlikely

  • Low beams that double as Daytime Running Light: Likely

  • High beams that double as Daytime Running Light: Likely

  • Vehicle is late model American (Chrysler, Dodge, Jeep, Ford, GM): Likely

  • Tech Specs

  • Intensity: 3,900lm (Raw), 3,350lm (Effective)

  • Power: 41.5w

  • Light Source: Elec-Tech NLW7535CV3 6000K (Cool White)

Product Reviews

3.6 out of 5 stars

10 Reviews   Write a Review

5 out of 5 stars

Really big difference; easy install

Scott Williams

Really great product and makes a huge difference in function and form! Really love the product. It fit perfectly, so it was easy to install. The only recommendation I'd have is to put directions for what the tiny allen screws were for. I didn't use them and couldn't figure out how they might be used at all.

2 out of 5 stars

Gtr lighting ultra 2

Kevin McCarthy

Order these bulbs for the fog lights on my Silverado. The bulbs looked good when I first opened them, but then I found that I was not able to rotate the collar 90 degrees to allow for proper placement in my housing. After several emails and photos with tech support showing the issue I was told to return them for a refund. I simply wanted another set of bulbs. Wish customer service was more accommodating.

5 out of 5 stars

We are dealing with the

hashem salman

We are dealing with the best of the best
Anyway the bulbs that I bought is so bright and easy to install

5 out of 5 stars

Great stuff

Joshua Cole

Great stuff

1 out of 5 stars

Not impressed

Marc Suhanyi

No instructions were included,

3 out of 5 stars

Not for a 2020 Colorado

David Cetnar

The fog lights will adjust to the proper orientation, meaning the bulbs facing the 3 o-clock and 9 o-clock position. All the installation videos say the bulbs should face 3 & 9 position. HR experts told me the same, when I told them that there is not an adjustment hole in the ring for the 3 & 9 position to fit my truck, they told me "its ok just have them face in the 12 & 6 position.

2 out of 5 stars


Al Crowder

The 5202 Ultra 2 I received did Not have the ability to be clocked 360∞. They needed to be clocked 90∞ From the factory position to eliminate shadowing and dark spots, this was not a option on the pair I received. I returned them and will look for something else. I will say the overall quality looked good and they are very bright. Very disappointed I was not able to use the in my application.

5 out of 5 stars

GTR ULtra 2.0 Fog lights

Jose Magana

Just received my GTR Ultra 2.0 Fog Lights and installed them on my 2018 GMC Sierra Denali 2500HD Duramax. I am very impressed with the quality of these LED lights. So far, these are the best light I've ever purchased. I've purchased other brands for other vehicles in the past but they weren't as good as these. These are the BEST. Now I'm going to order the headlight bulbs to match them up.

3 out of 5 stars

One of the bulbs burnt out within 2 months


I will say that these bulbs are very bright and i do like them! However, after only 2 months one of the bulbs looks as if it has split down the middle. I Did purchased everything that was recommended for these bulbs to run at their optimum performance. I did just find out that the bulb burnt out today so i will be contacting customer service tomorrow.

5 out of 5 stars

Improved lighting and look


Easy to install and makes the car look crisp!!