921/T15: GTR Carbide Canbus 2.0 (Red) Chevrolet These ballasts are factory refurbished

These ballasts are factory refurbished and guarantee top-notch performance and functionality

We use the best aftermarket connectors

The Model 8690 Adaptive 2 utilizes high-quality LEDs

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Standard: These are standard equipment on all HD Relay harnesses which are sized for anything except for a 9006 input

921/T15: GTR Carbide Canbus 2.0 (Red) Chevrolet These ballasts are factory refurbishedCarbide 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