GMC Sierra LED Halos Switchback 16-18 Sierra 1500 Diode Dynamics Porsche and D4S are all common

and D4S are all common bulb sizes in these projectors) No Brainer: Adding the STi-R Clear Lens to your OEM headlights or projector retrofit with OEM projectors should be a "no-brainer"

921 T15 Xtreme LED: Xtreme LED 921 T15 ceramic LED Replacement bulbs feature a perfectly positioned CREE MHB-A LED emitter to maximize the use of your tail light optics making them a truly functional reverse / back-up LED light upgrade

you can quickly reinstall the HitchMount and plug it back in

and won't void your factory warranty

GMC Sierra LED Halos Switchback 16-18 Sierra 1500 Diode Dynamics Porsche and D4S are all commonTime for an upgrade! From the factory, the Sierra comes with a white C shaped DRL that from certain angles can look segmented and distorted. Diode Dynamics is excited to release our HD LED Halos for the 2016 2018 GMC Sierra that provides a much brighter, more uniform appearance compared to the factory optics. These computer designed LED Halos are circuit boards that align perfectly behind the factory diffusing reflector. Available in switchback and