Spectras Headlight Replacement Bulbs by EVO Lighting®. If you need a headlight bulb that will outperform your factory-installed one, go for the Spectras bulb by EVO lighting. Spectras offer great brightness levels featuring a mixture of pressurized xenon, halogen and argon gasses combined with a high quality filament. Drive safely in any weather with the extremely bright Spectras headlight bulbs!