The release of the 2018 LCI introduced some minor improvements to the M4/4-Series Coupe and Convertible. On the exterior side, the most noticable change was the taillights. For those looking to update the rear of their 2014+ 4-series or 2015+ M4 to appear like the brand new 2018 models, the LCI Upgrade includes inner & outer taillamps (4 total) and plug & play harnesses for a 100% bolt-in install.
This product listing is for the EURO tail light set which has an amber turn signal indicator as opposed to the US-Spec turn signal indicator which illuminates red.
A minimal flickering will appear for the first few seconds of startup, this is the system's Bulb Check in use and is harmless to the vehicle.