All Optilux XY Bulbs are 12V, sold in pairs, and packaged in hard plastic shells.Off-road use only

The Optilux Extreme Yellow (XY) Bulbs are able to provide the vehicle owner with both fit and function. The Optilux XY Bulbs are designed to give you better visibility in extreme weather conditions as well as provide you with the look of the GTS Series race car lights. Race car drivers prefer a yellow beam because it provides a better color contrast in rainy, foggy and white out situations. The Optilux XY Bulbs produce a crisp yellow light from a bulb that is manufactured to the most precise measurements to provide the exact amount of light needed on the road.