Highsider Apollo Turn Signal Modules Get crafty with Highsider's Apollo Turn Signal Modules. These little LED turn signals are only limited by your creativity of where you want to put them! Their tiny size makes them virtually unseen until activated, thus cleaning up the looks of the traditional turn signals of yesteryear. Features: Ultrabright LED turn signals Very small aluminum housing Approved for front/rear use M8 mounting stud Dimensions: 13mm D x 22mm W Sold in a pair