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4257: GTR Ultra Series LED Reverse Bulbs

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Brand: GTR Lighting




PART #: 2 x GTR.LED435, 2 x GTR.LED439

Items in this Kit are on CLEARANCE!
Clearance Items are Non-Refundable


Introducing the GTR Ultra Reverse LED Bulbs – the ultimate solution for enhanced backup visibility and safety. With a remarkable boost in light output, improved reliability, and modern construction, these bulbs redefine your driving experience. The new Ultra version produces a stunning 1200 effective Lumens, far surpassing typical incandescent bulbs. With fifteen high-performance LED chips per bulb, these lights radiate brilliance from all sides. Engineered with a projector lens and innovative design, they ensure optimal illumination, adapting seamlessly to various reflector housings. Upgrade your vehicle's lighting with ease – a simple installation process and universal compatibility make GTR Ultra Bulbs a must-have upgrade. Don't compromise on safety and style; unlock unparalleled rearward clarity with these exceptional LED bulbs.


  • Enhanced Visibility: Experience safer driving with superior brightness.
  • High-Performance: 1200 Lumens for better illumination than traditional bulbs.
  • Multi-Angle Illumination: All-side lighting with top-edge projector lens.
  • Advanced Thermal Design: Cooler operation, longer lifespan, enhanced reliability.
  • Effortless Installation: Universal design for easy upgrades.


  • LED Bulbs: 2x (One Pair) Ultra LED Reverse Light Bulbs

  • Hardware: 2x Input Adapters, 2x Housing Adapters


This GTR Lighting product includes a 2 Year limited warranty, serviced and supported by the GTR LIghting team in Atlanta, GA. This warranty does not cover modifications, alterations, or misuse. For additional information, contact us.


  • Intensity: 1,200lm (Raw; Each)

  • Power: 12w

  • Input Voltage: 9-24V DC

  • Material: Anodized Aluminum

  • Light Source: 15x CSP 1919 6000K



  • Cross Compatibility: 4257, 4257NA, 1359, 7444NA, 1546, WTY21W, 0857, 1909, A7

  • Intended Use: Reverse Lights

Headlight Performance:
The Ultra Series LED Reverse Bulbs are so powerful that it's not even funny. Many of our customers liken them to having a whole other set of extra lights back there. That's how much brighter the world gets when you have more than 1000 lumens of useable light back there. In fact, the average 55w headlight outputs around 1200 lumens so these are serious. And really, they'll fit anywhere a 4257 will so use them wisely.

Do it the professional way, quick and simple. Thanks to the 100% plug-n-play harness these bulbs will fit just like the old-school ones did and look so much better. Pro Tip, test them before reinstalling the housing.

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