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1157: GTR i-LED Ultra Turn Signal Bulbs

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Brand: GTR Lighting




PART #: 1 x LED959

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Introducing the GTR Ultra i-LED Bulbs: Your quest for the ultimate automotive lighting ends here. Engineered to outshine the competition, these high-performance LED bulbs redefine intensity and style. Say goodbye to the numbers game – GTR Lighting is here to win. With an ingenious optical system, the i-LED bulbs project an intense forward output while reflecting over half the light backward onto your vehicle's reflectors. Resistor-free and power-efficient, these bulbs pack a punch while ensuring hassle-free installation. Choose from a range of captivating options: pure White, Red, PC Amber, and White/Amber Switchback. No compromise on intensity – they seamlessly fit any headlight or taillight housing, guaranteeing a bold presence in every turn, brake, tail, and daytime running light. Our intelligent i-Driver maximizes brightness without sacrificing reliability, ensuring stunning illumination from the moment you ignite your lights. Elevate your vehicle's aesthetics, even during daylight, as the GTR i-LED remains visually superior with concealed LED chips and crystal-clear optics!


  • Unparalleled Brightness: GTR Ultra i-LED Bulbs offer unmatched illumination.
  • Innovative Optics: Advanced design projects intense light forward and backward.
  • Hassle-Free: Resistor-free installation for powerful and efficient lighting.
  • Color Variety: Choose from White, Red, Amber, or Switchback options.
  • Universal Fit: Collar design fits any housing for a bold, consistent look.


  • LED Bulbs: 2x (One Pair) GTR Ultra Indicator-LED Bulbs

  • Wiring: 2x 1157 Plug and Play Inputs

  • Hardware: 4x Gaskets, 1x Torx Tool

  • Optional Hyperflash Adapters: 2x (One Pair)


This GTR Lighting product includes a Lifetime 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.


  • Input Voltage: 9-24V DC

  • Current: 260mA-2.1A (Red, White, Amber Models), 1.3A (Switchback Model) @ 12V DC

  • Light Source: 9-12x Proprietary SMD


  • CK Style Sockets: Not Compatible (Non-CK Only!)

  • Cross Compatibility: 1157, 1016, 1034, 1076, 1130, 1152, 1154, 1158, 1493, 2057, 2357, 2396, 2397, 3496, 7225, 7528

  • FITMENT: Signal, Marker, Brake, Tail, Reverse Lights


New Benchmark: When it comes to high performance LED Bulbs; the numbers game is simply an excuse for a lack of engineering, and GTR Lighting isn't here to play that game. The i-LED bulbs from GTR Lighting are here to win, and when you see them next to the aging competition, you won't worry much about the numbers.

Ultra Optics:The optical system on the i-LED bulbs is highly effective at maximizing output. It projects a considerable amount output forward to provide a vivid taste of intensity up close, but more importantly it reflects more than half of the output backwards onto the surrounding reflector of your head/tail light --which is what drives intensity when viewed from a distance.

Resistor Free: Make no mistake, these are still extremely powerful bulbs. The i-LED consumes nearly the same amount of power as the original incandescent/halogen bulb, which conveniently makes them resistor-free in many applications too. We do however recommend the optional plug-n-play modules for the most reliable hyperflash-free fitment into any position that acts as a blinker, regardless of application.

Applications: The GTR Ultra i-LED is available in a pure White, Red, PC Amber, and White/Amber Switchback. Their universal collar fits any headlight or taillight housing, making them the perfect solution for those who are unwilling to compromise on intensity from their turn, brake, tail and daytime running lights.

i-Driver: The intelligent LED Drivers have been tuned to maximize intensity without compromising in the reliability department. The high-output mode is over-driven for < 2 sec to maximize initial intensity, before ramping down to a more conservative drive rate that the system can handle long term.

Style, Even During the Daytime: Don't forget about the fact that everybody still see whats inside of your headlights during the daytime, even when they're un-lit. The GTR i-LED looks superior compared to everything else out there thanks to the fact that you cannot visibly see the LED chips directly. All you see is the business end of the bulb, with its mirror perfect, crystal clear optics protruding out of the anodized aluminum base. Perfection.

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