Motorcycle Front Turn Signals are also known as front indicator lights or front blinkers. The purpose is to signal the direction you're turning. Stock or OEM front turn signals are merely replacement parts for what came on the bike. Aftermarket ones typically offer some sort of improvement over stock. They may be slimmer, brighter, look better or even re-position where the signals are. The best options use LED lights and are plug-and-play which means no motorcycle modifications are required.