The H4 RSR Yellow styled lens is identical of our clear styled H4 lens. It is made of race track automotive grade, hard coated yellow acrylic, optimizing clarity, and preventing chipping or cracking. The selective yellow was first designed to improve the vision of the driver by cutting down glare effects in rain, fog and snow. Selective yellow is now commonly used on today’s racetracks by all top automotive companies. 9ELEVEN headlights pays tribute to Porsche’s long racing heritage with this lens and it is a direct fit for all of our fixtures. Please check with your local driving laws as selective yellow may not be allowed in some states or countries.