MDC 552 Aeroled indicators, are the first, and really unique, LED indicators with a patented three position regulation system, their design has been a model widely copied by many producers but the original one is here. With a simple small allen key, included in the mounting kit, it is possible to lock the indicators one of the three possible positions: fully open (street legal), medium and closed, often used for race use without disassembling the indicators. The indicators are legal for both front and rear use.