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921/T15: Carbide 2.0 (Resistor-Free) LED Bulbs

2 Reviews

Brand: GTR Lighting




PART #: 2 x GTR.LED602

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GTR Lighting's Carbide Series 2.0 LEDs are meticulously engineered to offer unparalleled brightness as plug-and-play replacement bulbs, emitting a remarkable 2,400 Lumens per pair due to their innovative design and efficient cooling. This extraordinary luminosity enhances safety, integrates seamlessly with CANBUS systems for improved performance, and adds a touch of elegance with custom LED chip-created colors. With built-in CANBUS integration, the Carbide Series 2.0 sets itself apart by eliminating the need for resistors, ensuring hassle-free installation without wiring modifications or flickering issues, making it compatible with a wide range of vehicles. Additionally, the bulbs feature an Intelligent Temperature Control System that safeguards against overheating through a thermistor circuit and strategically positioned vents and heat sink fins. Capable of replacing various bulb types, including 921 / T15 series, these LEDs redefine brilliance and convenience in automotive lighting.


  • Brightest LEDs: GTR Lighting Carbide 2.0 delivers 2,400 Lumens/pair for exceptional brightness.
  • CANBUS Integration: Built-in integration ensures easy installation without resistors or issues.
  • Efficient Design: Maximizes light output, enhancing safety and visibility.
  • Temperature Control: Advanced system prevents overheating, ensuring reliability.
  • Wide Compatibility: Fits various models, including T10, T15, 194, 168, W5W, 147, 152, 158, 159, 161, 168, 184, 192, 193, 2825, 912, 920, 921.


  • LED Bulbs: 2x (One Pair) 921 Carbide Canbus 2.0 LED Bulbs


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: 24w

  • Dimensions: 0.79in / 20mm DIA, 2.3in / 59mm L



  • Cross Compatibility: 921/T15 Only

  • FITMENT: Reverse Lights Only

Carbide Canbus 2.0: The Carbide Series LED replacement bulbs from GTR Lighting were originally designed to be the brightest option in the world and today with the version 2.0 they're even brighter! Because these bulbs are the brightest option available today you will experience greater safety from a brighter light, better performance through built-in CANBUS integration, and better style with the beautiful colors created by the custom built LED chips!

Not just the brightest, but also the easiest! In the past you had to wire in resistors to your turn signal bulb circuits in order to trick the computer into thinking that your LED bulbs were the same thing as your old dim bulbs. Not anymore! The new Carbide Series 2.0 bulbs have a built-in CANBUS-integration circuit that works with 95% of all cars, trucks, and motorcycles on the road today! Gone are the days of wiring in resistors, or replacing flasher modules. These new LED bulbs are truly plug and play, and one of the brightest and most reliable options around.

ITCS - Intelligent Temperature Control System: The Carbide Series 2.0 CANBUS LED bulbs have a unique physical design as well as a temperature controlled thermistor circuit to protect the bulbs from overheating. The aluminum case of the bulbs is larger than others in order to accommodate the extra heat given off by these bulbs. There are strategically placed vents and heat sink fins at the top of every bulb to maximize passive cooling.

NOTES: Please take these things in consideration before using these next-gen LED bulb upgrades: Some vehicle still need to use a traditional type of LED bulb and a resistor for turn signal applications - there are thousands of different applications and the technology does not exist yet to make a product that works for every single vehicle on the road. For example, these vehicles do not work without resistors, they still require the traditional type of LED bulbs, like Armor Series, paired with a resistor for turn signal applications: 2012-2017 Toyota Camry, 2015 Dodge Ram, 2018-2019 Subaru Crosstrek. The following vehicles work without resistors when using the Carbide Series 2.0 LED bulbs. These are confirmed to work without resistors for turn signals, no rapid flashing problems, no hyper flash, and no bulb out errors: 2018 Dodge Durango, 2019 Jeep Wrangler, 2018 Toyota 4Runner, 2019 Ram 1500. These bulbs are polarity specific. If they do not turn on, please try flipping it around in the socket and try again. If the bulbs stop working it means they got too hot and the protection circuit shut down. Please try to cool them down for 2 minutes and try again to troubleshoot the problem.

Ratings & Reviews

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Compared to the OEM bulbs, these LED bulbs are bright. Exactly what I was looking for. Used them to light up the cargo bed. Much improvement!

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