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These headlights boast a significant improvement in brightness
Durability is a priority
Modern: Like all modern OEM ballasts: the XB has relocated igniters far closer to the HID bulb
Reliability: Whereas the old model actually had to be over-driven to squeeze more than the available amount of light output out of it's LEDs: The new version doesn't come close to it's peak
efficient LEDs enhance visibility and safety
Backup LEDs for 2015-2019 GMC Sierra 2500 (Pair) XPR (720 Lumens) Diode Dynamics Mazda These headlights boast a significantUpgrade. Add more light output and a modern appearance to your backup lights with the 921 XPR backup bulb. Each of the four sides of this bulb is populated with 4 high power LED chips for maximum brightness. Housed in an aluminum casing with a textured finish for superior heatsinking properties the XPR will last for years to come. Best of all installation only takes minutes simply take out your factory bulb and the XPR will fit snugly in the socket.
