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

12 Reviews

Brand: GTR Lighting




PART #: 2 x GTR.LED602

Easy Return


The GTR Lighting Carbide Series 2.0 LEDs are meticulously engineered to offer unparalleled brightness as plug-and-play replacements for various bulb types. Their exceptional design prioritizes optimal lighting efficiency, generating an impressive 2,400 Lumens per pair by effectively managing heat and showcasing custom LED chip colors. With built-in CANBUS integration, these LEDs eliminate the need for resistors, simplifying installation and preventing issues like 'bulb-out' warnings, flickering, and hyper flash. This innovative integration works seamlessly with most vehicles, making them user-friendly and incredibly reliable. Furthermore, the Carbide Series 2.0 LEDs feature an Intelligent Temperature Control System, combining thoughtful physical design with temperature-regulating technology to prevent overheating. Compatible with numerous bulb models, including T10, T15, 194, 168, and more, these LEDs offer a superior and hassle-free lighting solution for enhanced safety, performance, and style.


  • 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 Series OverviewThe Carbide Series 2.0 921/T15 from GTR Lighting is a remarkable bump in performance from what was already a good light in version 1.0. These LED Lights are focused on one thing, getting the most light onto your target as physics will allow for. Here at Headlight Revolution we personally love the visual appeal of the lights even when they're off. GTR poured some real effort into designing an attractive package and it shows. What might amaze you is how much technology is packed inside though.

CANbus Compatible - Canbus vehicles can wreck a brilliant lighting upgrade in no time. GTR doesn't want its customers experiencing that pain and neither do we. That's why we love that the Carbide Series 2.0 has Canbus integration built-in. No more resistors, no more having to hack your wiring to ensure you avoid 'bulb-out' warnings, no more flicker, and no more hyper flash. It's all a thing of the past with the Carbide 2.0.

Redundencey: The Carbide Series 2.0 features something called the Intelligent Temperature Control System or ITCS. It features layers of design that keep this bulb cool on the hottest of days. First, the aluminum casting itself evacuates heat at a rapid pace. Add to it internal heat sink fins that further cool the light. Finally, if for some reason the light should experience unexpectedly high temperatures a thermistor circuit is constantly monitoring in case the power needs to be reduced. There's no way around it, GTR wants this to be the last set of bulbs you ever buy.

What's Included:
Two CANBUS Friendly LED Bulb Replacements (Fixes rapid flash, hyper flash and bulb out errors)

NOTE: Do you have CK style wiring or Standard? These bulbs will only work with standard style wiring. Click Here to find out which bulbs you need.

These LED bulbs will replace any T20 based 3156/3157 series bulb, here is the bulb cross reference guide for this product: T10, T15, 194, 168, W5W, 147, 152, 158, 159, 161, 168, 184, 192, 193, 2825, 912, 920, 921, 501, 259, 280, 285, 447, 464, 555, 558, 585, 655, 656, 657, 1250, 1251, 1252, 2450, 2652, 2921, 2825, 194NA, 658, W16W, 906, W15W, W5WB

Ratings & Reviews

12 reviews

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Very bright and filling light

by -

I had previously put a cheap amazon led bulb in for my reverse light and it was good, but these lights are certainly better. I noticed that the color is very white and bright, and that more of the area light up behind you compared to the cheap amazon bulbs. If you are not looking to spend over $100 for the super bright reverse lights, this is a no brainer!


Simply the best!


Replaced 921s in rear light assembly 2013 Toyota 4runner SR5. Work fantastically. Everyone knows you're backing up....and you can see where you're backing up more as well!

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