GTR Lighting

4257: GTR i-LED Ultra Turn Signal Bulbs

$234.99 CAD

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Choose Bulb Color GTR-I-LED Ultra 4257 Red (PAIR) GTR-I-LED Ultra 4257 White (PAIR) GTR-I-LED Ultra 4257 Amber (PAIR) GTR-I-LED Ultra 4257 Switchback (PAIR)

The GTR Lighting Ultra i-LED represents the next evolution in high-performance automotive LED bulbs. Instead of chasing inflated lumen numbers, GTR focused on what truly matters—optical engineering, efficiency, and real-world visibility. The result is a premium LED bulb that delivers outstanding brightness, superior beam performance, and a clean OEM+ appearance both day and night.

Advanced Optical Engineering

Unlike conventional LED replacement bulbs that simply flood light in every direction, the Ultra i-LED utilizes an advanced optical system designed to maximize usable light output.

Its precision optics project a portion of the light directly forward for exceptional close-range visibility while reflecting more than half of the light back into your factory reflector. This creates a significantly brighter and more uniform illumination that's highly visible from a distance, making these bulbs ideal for brake lights, tail lights, turn signals, and daytime running lights.

High Performance Without External Resistors

The Ultra i-LED consumes nearly the same amount of power as a traditional incandescent or halogen bulb, allowing it to operate without external load resistors in many applications.

For vehicles prone to hyperflash when used as turn signals, GTR recommends optional plug-and-play anti-hyperflash modules to ensure reliable, error-free operation.

Intelligent i-Driver Technology

Each bulb features GTR's advanced i-Driver electronic driver system.

Upon activation, the bulb briefly operates in a high-output mode for less than two seconds, producing maximum brightness exactly when it's needed. The driver then automatically transitions to a lower operating level to reduce heat while maintaining exceptional reliability and long service life.

Premium Appearance

The Ultra i-LED doesn't just perform better—it looks better too.

Thanks to its crystal-clear precision optics, the LED chips remain completely hidden from view. Instead of seeing exposed emitters inside your headlights or taillights, you'll see a clean, mirror-like optical lens extending from a beautifully machined anodized aluminum housing, creating a premium OEM-inspired appearance even when the lights are turned off.