What if you had more light when you needed it most, like while driving at night? Brighter light is as easy as upgrading to silverstarĀ® bulbs . up to 35% brighter, up to 30% more down road visibility and up to 35% more side road visibility. These bulbs have a cooler, more blue-ish light than normal yellow-ish headlights. H4 55/60w high/low beam bulb.