Denali 2.0 D4 Yellow TriOptic™ Lens Kit (REV01)This TriOptic Lens Kit for D4 lights is designed to maximize visibility in foggy and rainy conditions. Both Amber and Selective Yellow lens colours increases visibility in fog and rain by blocking blue frequencies from the light, which reflect off water vapour and decrease vision. Choose Amber to match your OEM turn signals, or Selective Yellow for even more daytime visibility to oncoming traffic. The kit includes two spot lenses and two True Hybrid