What is the difference between OEM Bi-Xenon and aftermarked Bi-Xenon kits?
OEM Bi-Xenon usually has a moveble projector shield with a optimized reflector and curved lens. Aftermarked Bi-Xenon is ment to replace dual filament halogen bulbs H4, 9004, and 9007. Most 9004 and 9007 headlights are not...